When the key is a word, it is also called a keyword.Key bedSame as Key seat.Key bolta bolt which has a mortise near the end, and is secured by a cotter or wedge instead of a nut.Key bugleSee Kent bugle.Key of a position (Mil.) See Key, 4.Key seat (Mach.) a bed or groove to receive a key which prevents one part from turning on the other.Key waya channel for a key, in the hole of a piece which is ke