lock away
phrasal verb
locked away;
locking away;
locks away
Definition of lock away
1
: to put (something) in a locked container, place, etc.
The jewelry was locked away in a cabinet.
2
: to put (someone) in a locked place (such as a prison) for a long period of time
lock away a criminal The state locked their sister away in a psychiatric hospital.
3
: to keep (oneself) alone in a room or place for a long period of time
He locked himself away in his room while he studied. He was locked away in his room while he studied.