1. (n.) The fruit of certain trees and shrubs (as of the almond, walnut, hickory, beech, filbert, etc.), consisting of a hard and indehiscent shell inclosing a kernel.

2. (n.) A perforated block (usually a small piece of metal), provided with an internal or female screw thread, used on a bolt, or screw, for tightening or holding something, or for transmitting motion.

3. (n.) The tumbler of a gunlock.

4. (n.) A projection on each side of the shank of an anchor, to secure the stock in place.

5. (v. i.) To gather nuts.