LOCK (3)

Lock, v. t. [imp. & p. p. Locked (?); p. pr. & vb. n. Locking.] 1. 1. 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.
2. 2. 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.
3. 3. 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.
4. 4. To link together; to clasp closely; as, to lock arms. “ Lock hand in hand.” Shak.
5. 5. (Canals) To furnish with locks; also, to raise or lower (a boat) in a lock.
6. 6. (Fencing) To seize, as the sword arm of an antagonist, by turning the left arm around it, to disarm him.