se trancou no quarto

locked themselves in the room

→ se
phrase Rare #40,175
locked themselves in the room A reflexive expression meaning that someone locked themselves in the bedroom or another room, usually to be alone or avoid others. The pronoun se changes the subject's gender only through context: se trancou can mean he, she, or they locked themselves in.
PO: Depois da discussão, ela se trancou no quarto.
EN: After the argument, she locked herself in the room.

Se trancou no quarto.

He locked himself in the bedroom.

— A Noite Americana (1973)

Ele se trancou no quarto.

He locked himself in the bedroom.

— O que o Coração Deseja (2001)

Se trancou no quarto e não vai sair.

He locked himself in his room and won't come out.

— A Noite Americana (1973)

Mary se trancou no quarto e chorou por quase uma hora.

Mary locked herself in her room and cried for almost an hour.