Definition of flange in English:



  • A projecting flat rim, collar, or rib on an object, serving for strengthening or attachment or (on a wheel) for maintaining position on a rail.

    ‘the flanges that held the tailpipe to the aircraft’
    • ‘It now sports a mismatched set of pony wheels, after a flange on a previous pair let go.’
    • ‘Further forward, the wreck is flat to the seabed, just a few curved plates rising above the sand, some with flanges and valves projecting.’
    • ‘However, at the building's lower levels, the flanges are pointed inward to prevent accidental damage.’
    • ‘Finally, they lay mesh over the flanges, position it above the plywood forms, and cast concrete on top.’
    • ‘The hull and deck is joined at an overlapping flange with sealant and bolts on 12-inch centers.’
    • ‘He also notes, ‘We went from a flat flange to a tough design with a specified insertion force with very tight tolerancing.’’
    • ‘The hulls and decks are joined on an inward flange and are securely bolted together through an aluminum toe rail.’
    • ‘Humble dressmaker details, such as self-welting and a flat flange, are simpler than fussy ruffles.’
    • ‘Tiffs grease is applied to the rail curves or train wheels to reduce noise and wear on wheel flanges.’
    • ‘He explained that a tie joist is on the column line with both flanges attached, contributing to the stiffness of the frame.’
    • ‘Saturn engineers initially viewed the pinch-weld flanges beneath the rocker panels as an excellent place to trim weight.’
    • ‘Grab bars usually are attached to the wall by flanges, each with three screws.’
    • ‘So, the notion of fireproof expanded to include noncombustible materials that did not conduct heat, which could distort flanges or other crucial components.’
    • ‘Position the floor flange so that the underside of the flange is at the level of the finished floor.’
    • ‘The derailment had happened when the flange of a wheel struck one half of a broken fishplate - a metal plate which holds sections of track together.’
    • ‘Some package designs, particularly those incorporating centrally located flanges or reclosable lids, require forming of the top web in addition to the bottom web.’
    • ‘To ease rolling it around, the wheels have no flanges.’
    • ‘The deck and hull are through bolted on an inward flange and structural knees and bulkheads are securely attached.’
    • ‘Attach the remaining short flange, then flip the flanges right side up and press along the seams.’
    • ‘Beam flanges became the rail for the trolley rigs but the beams also supported damaged roof arches during their restoration.’
    shelf, sill, mantel, mantelpiece, mantelshelf, shelving
    View synonyms


Late 17th century: perhaps based on Old French flanchir ‘to bend’.