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lock on

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lock on (to someone or something)

to fasten or grab onto someone or something. She locked onto the child and wouldn't leave his side for an instant. I saw the thing 1wanted and locked on.

See also: lock, on

lock on

v.

1. To aim something at a moving target so as to follow it automatically: The pilot locked the heat-seeking missile on its target.

2. To stare at someone or something intently; fix one's gaze on someone or something: The detective's eyes locked on the suspicious package under the desk.

See also: lock, on