Look up ply in Wiktionary, the free dictionary.

Ply or Plies may refer to.

• Ply, a strand or layer of a material
• Ply (game theory)
• PLY (file format), the polygon data file format.
• Plying, the spinning technique to make yarn.
• A colloquialism for Plywood
• The different layers of toilet paper.
• Ply, a port or bay from Edwardian times.
• PLY [1], an implementation of lex and yacc parsing tools for Python.
• "Ply", DOS-based 16-bit complicated polymorphic virus from 1996
• Plies (rapper) (born 1976), an American recording artist

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