"plies" in the noun sense
1. ply
one of the strands twisted together to make yarn or rope or thread often used in combination
"three-ply cord"
"four-ply yarn"
2. ply
usually in combinations) one of several layers of cloth or paper or wood as in plywood
"plies" in the verb sense
1. provide, supply, ply, cater
give what is desired or needed, especially support, food or sustenance
"The hostess provided lunch for all the guests"
2. ply
apply oneself diligently
"Ply one's trade"
3. ply, run
travel a route regularly
"Ships ply the waters near the coast"
4. ply
join together as by twisting, weaving, or molding
"ply fabric"
5. ply
wield vigorously
"ply an axe"
6. ply
use diligently
"ply your wits!"
Source: WordNet® (An amazing lexical database of English)
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