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Lock (n.) A tuft of hair; a flock or small quantity of wool, hay, or other like substance; a tress or ringlet of hair.
Lock (n.) Anything that fastens; specifically, a fastening, as for a door, a lid, a trunk, a drawer, and the like, in which a bolt is moved by a key so as to hold or to release the thing fastened.
Lock (n.) A fastening together or interlacing; a closing of one thing upon another; a state of being fixed or immovable.
Lock (n.) A place from which egress is prevented, as by a lock.
Lock (n.) The barrier or works which confine the water of a stream or canal.
Lock (n.) An inclosure in a canal with gates at each end, used in raising or lowering boats as they pass from one level to another; -- called also lift lock.
Lock (n.) That part or apparatus of a firearm by which the charge is exploded; as, a matchlock, flintlock, percussion lock, etc.
Lock (n.) A device for keeping a wheel from turning.
Lock (n.) A grapple in wrestling.
Lock (v. t.) To fasten with a lock, or as with a lock; to make fast; to prevent free movement of; as, to lock a door, a carriage wheel, a river, etc.
Lock (v. t.) To prevent ingress or access to, or exit from, by fastening the lock or locks of; -- often with up; as, to lock or lock up, a house, jail, room, trunk. etc.
Lock (v. t.) To fasten in or out, or to make secure by means of, or as with, locks; to confine, or to shut in or out -- often with up; as, to lock one's self in a room; to lock up the prisoners; to lock up one's silver; to lock intruders out of the house; to lock money into a vault; to lock a child in one's arms; to lock a secret in one's breast.
Lock (v. t.) To link together; to clasp closely; as, to lock arms.
Lock (v. t.) To furnish with locks; also, to raise or lower (a boat) in a lock.
Lock (v. t.) To seize, as the sword arm of an antagonist, by turning the left arm around it, to disarm him.
Lock (v. i.) To become fast, as by means of a lock or by interlacing; as, the door locks close.