Definition of interlock in English:



  • 1 (of two or more things) engage with each other by overlapping or by the fitting together of projections and recesses.

    ‘their fingers interlocked’
    ‘a design of interlocking leaves’
    • ‘As you massage your partner's hands, pay attention to the way your fingers can interlock and how your partner's hands can respond to yours in return.’
    • ‘She seemed to have gained a sudden interest in the fact that her fingers interlocked.’
    • ‘Their fingers interlocked lovingly as he stared into her eyes.’
    • ‘Her uncle looked at his little niece, her face flashing orange and green and her fingers interlocking in awkwardness.’
    • ‘Couples hold each other close in a waltz, moving forward and back and turning, their legs interlocking in a subtle game of advance and retreat, of never quite touching.’
    • ‘On their right arms were long clear shields that interlocked to form a clear plastic wall.’
    • ‘He could feel her hand as her fingers interlocked into his, and he could feel her lips, kissing him before she laid her head back on his chest.’
    • ‘With this sense of joinery interlocking in three dimensions, the room has the scale and detail of a meticulously crafted piece of furniture.’
    • ‘Extra thick tangs, welded to the inside of the lid, securely interlock into dual internal recessed padlock pockets for maximum protection from bolt cutters.’
    • ‘Each apartment was designed slightly differently, according to its specific location in the building, so that it interlocks either with the street or the garden next to it.’
    • ‘Tobey reached over and grabbed Jordan's hand, and their fingers interlocked.’
    • ‘The blonde girl's left hand crept up to meet with his own, and their fingers weakly interlocked.’
    • ‘We developed two plans that alternate on even and odd floors and interlock so that all of the terraces are two stories high.’
    • ‘Our fingers interlocked and I leaned against his chest, resting the back of my head on his shoulder.’
    • ‘Random pattern stamps can be particularly troublesome, because they no longer interlock properly when they are larger than their designed size.’
    • ‘The other earring in his left ear had one metal hoop that directly hung from his ear, interlocked with the other two hoops in it as needed here.’
    • ‘The two swords interlocked with each other, creating a double-edged blade.’
    • ‘The phone has been designed with one unified shape, in which the handset and stand are interlocking and where the phone can be placed vertically or rested on horizontally.’
    • ‘Once she accepted his hand and their fingers interlocked, he sighed audibly and closed his eyes.’
    • ‘The rod is designed to attract the ring, so that the two molecules interlock spontaneously when mixed together.’
    engage, interconnect, interlink, mesh, intermesh, fit together, join together, join, unite, connect, yoke, mate, couple
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    1. 1.1[with object]Lock or join (things) together.
      ‘the two planes were almost interlocked as they climbed together’
      • ‘The toast is when the bride and groom toast each other then interlock arms and drink.’
      • ‘Her hands were interlocked on her lap, and she just sat, thinking, by lamplight.’
      • ‘The spicules are interlocked or joined to form the shell wall.’
      • ‘The loom's upper beam is then pulled down, to interlock the threads together.’
      • ‘The self-climbing scaffolds are interlocked and climb together.’
      • ‘Take your left arm behind you and with the elbow pointing towards the ground and see if you can interlock your hands behind your back.’
      • ‘If either one of you needs more assistance, bring your hands behind you and interlock fingers with her.’
      • ‘Before Act II, the dancers stand in a circle and interlock pinkie fingers.’
      • ‘I had cars either side so close that our wheels were interlocked and I couldn't swerve, and I got hit front and back.’
      • ‘Equally as authoritative, it was the South boys who interlocked arms for the singing of the national anthem.’
      joint, join, fit together, link, splice, mortise, tenon
      View synonyms


  • 1A device or mechanism for connecting or coordinating the function of different components.

    ‘a safety interlock to stop the blades spinning’
    • ‘Used cars sold after January 2, 2009 would have to have the interlocks also.’
    • ‘A magnetic safety interlock in the sample chamber prevents the laser from firing when the chamber door is ajar.’
    • ‘A device such as the interlock is a form of partial incapacitation.’
    • ‘Double sensors and electromagnetic interlocks prevent undesired wheel raising on the road or lowering whilst in the water.’
    • ‘Many commercial lasers make use of door/cover interlocks to protect against high voltage, however, the service personnel must often work with the interlock defected.’
    • ‘A monitoring system stops the oven if either or both of the interlocks fail.’
    • ‘In addition to an automatic top-tang safety, a novel interlock prevents the firing pins from striking a cartridge unless the trigger has been depressed.’
    • ‘One key component is the alcohol tester, which includes a tube projecting from the instrument panel, a separate sniffing device and an ignition interlock.’
    • ‘The bladder is blow molded over the frame with mechanical interlocks, formed in the molding process, holding the structure together.’
    • ‘The safety interlock prevents the removal of a panel until accessible emission values are below the AEL for the assigned class.’
    • ‘These dumbwaiters are designed much like a standard elevator, with built-in safety brakes and safety interlocks that prevent operation if any door is open.’
    • ‘Early evaluations of interlocks suggest that the devices have the potential to significantly reduce recidivism rates among convicted drink drivers.’
    • ‘We couldn't do this to both engines because a mechanical interlock prevents moving both condition levers to feather.’
    • ‘A first and a second interlock are operably engageable with the carriage assembly to prevent coupling of the receptacle with the aerosolization mechanism.’
    • ‘Mr Edge in cross-examination put the gloss on this response that, since the machinery was coming to the end of its life and the First Defendants intended to buy new machinery, it was not worth putting interlocks on old machinery.’
    • ‘Safety controls shall include (but are not limited to) signage, safety latches, interlocks, barriers, administrative control, emergency egress/ingress, etc.’
    • ‘A safety interlock on the Denharco head prevents the topping saw from working when the head is in the vertical position - as it is when you are felling a tree.’
    • ‘Levers can incorporate interlocks, requiring the user to actuate a release mechanism before he or she can move the lever.’
  • 2[mass noun] A fabric knitted with closely interlocking stitches allowing it to stretch.

    ‘a dress in soft interlock’
    [count noun] ‘a cotton interlock in black or plum’
    • ‘Made of 6 oz., extra-smooth Egyptian combed cotton interlock, this shirt features cotton / Lycra cuffs and neck for extra stretch where it counts, and a hemmed bottom.’
    • ‘Made of 100% combed cotton interlock fabric, it has cap sleeves and a round neck.’
    • ‘For lettucing or ruffling, choose a fabric that has crosswise stretch, such as a cotton/spandex blend, cotton interlock or ribbing.’
    • ‘Is it possible to dye cotton interlock successfully?’