lock verb
1 close with a lock
ADV. carefully He carefully locked the door behind him.
VERB + LOCK forget to
PHRASES be firmly/securely locked, keep sth locked Keep your garage securely locked.
2 put sb/sth inside sth that is locked
ADV. away, in, up I was terrified they would lock me up again.
PREP. in I locked myself in the bathroom.
PHRASES be safely/securely locked All the valuables were safely locked away.