1at or to the far side of (something), typically so as to be hidden by it:the recording machinery was kept behind screens the sun came out from behind a cloud underlying (something) but not apparent to the observer:the agony behind his decision to retire 2following or further back than (another member of a moving group):we were stuck behind a slow-moving tractor at the back of (someone), after they have passed through a door:she ran out of the room, slamming the door behind her 3in support of or giving guidance to (someone else):whatever you decide to do, I’ll be behind you the power behind the throne controlling or responsible for (an event or plan):the chances were that he was behind the death of the girl the meticulous organization behind the coup 4after the departure or death of (someone):he left behind him a manuscript which was subsequently published 5less advanced than (someone or something) in achievement or development:the government admitted it is ten years behind the West in PC technology
6having a lower score than (another competitor):Woosnam moved to ten under par, five shots behind Fred Couples 1at or to the far side of something:Campbell grabbed him from behind 2in a particular place after leaving or after others have moved on:don’t leave me behind 3further back than other members of a moving group:Ben led the way, with Joe a short distance behind 4(in a contest or match) having a score lower than that of the opposing team:England were still 382 runs behind
5late in accomplishing a task:I’m getting behind with my work in arrears:she was behind with her rent
1 informal a person’s buttocks:she slid inelegantly down a few steps on her behind
2 Australian Rules a kick that sends the ball over a behind line, or a touch that sends it between the inner posts, scoring one point.