Définition "ply" dans le dictionnaire Collins English Dictionary & Thesaurus

ply (plies 3rd person present) (plying present participle) (plied past tense & past participle )

1 verb If you ply someone with food or drink, you keep giving them more of it.
Elsie, who had been told that Maria wasn't well, plied her with food... V n with n

2 verb If you ply someone with questions, you keep asking them questions.
Giovanni plied him with questions with the intention of prolonging his stay. V n with n

3 verb If you ply a trade, you do a particular kind of work regularly as your job, especially a kind of work that involves trying to sell goods or services to people outdoors.
...the market traders noisily plying their wares... V n

-ply
You use -ply after a number to indicate how many pieces are twisted together to make a type of wool, thread, or rope.  comb in adj
You need 3 balls of any 4-ply knitting wool.