Thick'ness, n.

n. 1. The quality or state of being thick; denseness; density; consistence; spissitude; as, the thickness of fog, clouds, paint, mortar, honey, blood, and the like.

2. The state of being close, dense, or impervious; as, the thickness of shades.
3. The state of being crowded or near; as, the thickness of trees in a forest; the thickness of a wood.
4. The extent of a body from side to side, or from surface to surface; as, the thickness of a tree; the thickness of a board; the thickness of the hand; the thickness of a layer of earth.
5. Dullness, as of the ear; want of quickness or acuteness; as, thickness of hearing.