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  1. ply
    IPA[plī]
  2. noun

    • 1. a thickness or layer of a folded or laminated material:

      tiles that have a black PVC ply in the lamination
    • 2. a strand of yarn or rope:

      four-ply yarn
    • 3. the number of layers or strands of which something is made:

      the yarn can be any ply from two to eight
    • 4. a reinforcing layer of fabric in a tire:

      a six-ply whitewall tire
    • 5. short for plywood

    • 6. (in game theory) the number of levels at which branching occurs in a tree of possible outcomes, typically corresponding to the number of moves ahead (in chess strictly half-moves ahead) considered by a computer program.

    • 7. a half-move (i.e. one player's move) in computer chess.

  3. Variation

    • n.: noun: ply, plural noun: plies

    • verb

      work with (a tool, especially one requiring steady, rhythmic movements):

      work steadily at (one's business or trade); conduct:

    • noun

      a thickness or layer of a folded or laminated material:

      a strand of yarn or rope:

    • verb

      work steadily with (a tool):

      work steadily at (one's business or trade):

    • adjective

      (of a material or yarn) consisting of two layers or strands.
    • noun

      yarn consisting of two strands.

      plywood made by gluing together two layers with the grain in different directions.

    • adjective

      (of material) having three layers or strands:
    • noun

      knitting wool made of three strands.

      plywood made by gluing together three layers with the grain in different directions.

    • adjective

      (of a material) having four strands or layers:
    • noun

      knitting yarn made of four strands.
    • adjective

      (of a tire) having fabric layers with their threads running diagonally, crosswise to each other.
    • adjective

      (of material or yarn) having three layers or strands:
    • noun

      yarn made of three strands.

      plywood made by gluing together three layers with the grain in different directions.

    • adjective

      (of a material or yarn) consisting of two layers or strands.
    • noun

      yarn consisting of two strands.

      plywood made by gluing together two layers with the grain in different directions.

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