lock on

1. There's no lock on the door.

   CK · Tatoeba · CC BY 2.0 FR · A2Open on TatoebaReport a problem

2. I changed the lock on my door.

   ruЯ сменил замок на своей двери. — Balamax

   CK · Tatoeba · CC BY 2.0 FR · A2Open on TatoebaReport a problem

3. Please lock the door on your way out.

   CK · Tatoeba · CC BY 2.0 FR · A2Open on TatoebaReport a problem

1. (intransitive)To begin tracking a target via an automated system.

2. (transitive)To cause a missile to track (a target).

3. (intransitive)To engage in a lock-on protest.

irregular

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• lock inzatrzymywać, zatrzymaćTo fix the value of (something potentially variable).
• lock upзамикати, замкнутизапирать, заперетьeinsperrenencerrar, enllavarenfermerrinchiuderezamknąćprenderTo imprison or incarcerate (someone).
• lock outaussperrenescludere, chiudersi fuorizamykać przypadkowo, zamknąć przypadkowotrancar para foraTo inadvertently prevent (a person, particularly oneself) from entering a place, by leaving it locked.
• lock onfijarseśledzićTo begin tracking a target via an automated system.
• lock awaywegsperrenchować pod kluczem, schować pod kluczemTo lock up; to lock in a safe place, out of view.
• lock downTo secure (something).
• lock intoTo firmly commit to (something or someone).
• lock offinformalTo keep (someone) out of (something or someplace) using a lock.