What is the full meaning of nut?

Answer 1

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., 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. See Illust. of lst Bolt., The tumbler of a gunlock., A projection on each side of the shank of an anchor, to secure the stock in place., To gather nuts.