- (transitive) To return, restore (a thing to its original owner or location etc.).
- Give me back my book!
- (transitive, intransitive, idiomatic) To contribute money, goods, or, especially, services for charitable purposes, as if in return for one's own success.
- We organize this Thanksgiving dinner at the old-age home to give back to the community.
- (archaic) To recede; to retreat.
- They gave back and came no farther.