ply
noun/plaɪ/
/plaɪ/
[uncountable] especially in compounds- a measurement of wool, rope, wood, etc. that tells you how thick it is
- four-ply knitting yarn
Word Originnoun late Middle English (in the sense ‘fold’): from French pli ‘fold’, from the verb plier, from Latin plicare ‘to fold’.
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ply