1. at or to the back of something
2. following or after someone or something
3. supporting or in favor of someone

1. in or to a place that is back or at the rear
2. late or slow in doing something

1. the buttocks
Usage: informal

Examples

• The cat hid behind the couch.
• She walked behind her friend down the hallway.
• The whole team is behind the new coach.
• He’s behind in his math homework.
• Look behind you before crossing the street.
• The project is running behind schedule.
• She fell and landed on her behind.