do up = fasten
- Do your coat up. It 's cold.
- Could you do my dress up? I can't reach it.
- Do up your trousers!
- Don' t do all the buttons up. It 's not that cold.
- Do the zip up.
- I 'll do up the baby 's jacket. He gets a cold very easily these days.
- Before he did the shirt up, I saw he had a tattoo on his arm.
- She had forgotten to do her shoelaces up and when she ran for the phone, she tripped over and fell flat on the floor.