LOCKv.t.
1. To fasten with a particular instrument; as, to lock a door; to lock a trunk.
2. To shut up or confine, as with a lock; as, to be locked in a prison. Lock the secret in your breast.
3. To close fast. The frost locks up our rivers.
4. To embrace closely; as, to lock one in the arms.
5. To furnish with locks, as a canal.
6. To confine; to restrain. Our shipping was locked up by the embargo.
7. In fencing, to seize the sword-arm of an antagonist, by turning the left arm around it, after closing the parade, shell to shell, in order to disarm him.
LOCKv.i.
1. To become fast. The door locks close.
2. To unite closely by mutual insertion; as, they lock into each other.