Pronunciation: (thik'nis), [key]
1. the state or quality of being thick.
2. the measure of the smallest dimension of a solid figure: a board of two-inch thickness.
3. the thick part or body of something: the thickness of the leg.
4. a layer, stratum, or ply: three thicknesses of cloth.
to bring (a piece, as a board) to a uniform thickness.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.