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.