Meanings
Usage patterns
〈人〉に返しをするto give someone something in return (a gift or favor)
Since I received a gift, I gave her something in return.
〈物〉に返しをつけるto attach a barb to (a fishing hook)
I had attached a barb to the fishing hook.
返しを作るto make the sweet soy glaze (for soba sauce, teriyaki, etc.)
I made the sweet soy glaze for the soba dipping sauce.
Expressions
木の葉返しrapid slicing stroke; leaf-return cut 取り返しがつかないcannot be undone; irreversible; can't be recovered from