check off
verb1
Philippines, US, Often, Used without "off" To mark items on a list (with a checkmark or by crossing them out) that have been chosen for keeping or removal or that have been dealt with (for example, completed or verified as correct or satisfactory).
- Check off the items on the list that interest you.
- Check off the correct answer to each question.
2
To carry out a decision recorded through the process of checking off an item on a list, including dealing with it, removing it from the possible choices, or removing the not checked items from further consideration.
3
To deduct union members' dues from their wages.
4
Slang To request protection by prison authorities.
- He's not in gen-pop anymore because he checked off.