ply
     n 1: one of the strands twisted together to make yarn or rope or
          thread; often used in combination; "three-ply cord";
          "four-ply yarn"
     2: (usually in combinations) one of several layers of cloth or
        paper or wood as in plywood
     v 1: provide what is desired or needed, especially support, food
          or sustenance; "The hostess provided lunch for all the
          guests" [syn: {provide}, {supply}, {cater}]
     2: apply oneself diligently; "Ply one's trade"
     3: travel a route regularly; "Ships ply the waters near the
        coast" [syn: {run}]
     4: wield vigorously; "ply an axe"
     5: use diligently; "ply your wits!"
     [also: {plied}]
Source: WordNet® 2.0