(intransitive) To begin tracking a target via an automated system. / (transitive) To cause a missile to track (a target).

Archaic spelling of lock.

A surname.

plural of lockful

Enough water to fill a canal lock.

plural of locke

simple past tense and past participle of lock in

Third-person singular simple present indicative form of lock in

simple past tense and past participle of lock on

Third-person singular simple present indicative form of lock on