to make someone lose consciousness by hitting them
He managed to knock his opponent out in the final round.
그는 마지막 라운드에서 상대를 쓰러뜨리는데 성공했다.
to eliminate someone from a competition so they cannot continue
The team was knocked out of the tournament after losing the last match.
그 팀은 마지막 경기를 잃은 후 토너먼트에서 탈락했다.