Definition of four-ply in English:

four-ply

adjective

  • (of a material) having four strands or layers.

    [as modifier] ‘four-ply yarn’
    • ‘Instead of the four-ply Titan my machinery comes with, I go with a Galaxy eight-ply.’
    • ‘FIG. 1 is an illustration showing the result of a prior art weaving method in interweaving a two-ply portion and a four-ply portion.’
    • ‘The four-ply seams won't tear or unravel, and the soft but tough 1-inch tie-downs won't put dings or scratches on your boat's hull.’
    • ‘The L7 and L8 series are robust machines with strong four-ply tread belts, thick decks and lots of control panel options.’
    • ‘Although six and eight-ply boards are thicker than traditional four-ply boards, they can be cut easily when the proper guidelines are followed, noted the experts.’
    • ‘She recently mounted three four-ply boards together plus a rag barrier board.’

noun

  • Knitting yarn made of four strands.

    • ‘Changes to the Pueblo stitch only began to occur with the advent of the domestically manufactured, aniline-dyed wool four-ply, often referred to as ‘Germantown yarn.’’

Pronunciation:

four-ply

/ˈfôrˌplī/