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); to tick off (UK), tick (UK), cross off, strike off.
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.
To deduct union members' dues from their wages.
To disclose the identity of someone.
To equate or make the same; to unite or combine into one.
To claim an identity; to describe oneself as a member of a group; to assert the use of a particular term to describe oneself.
To establish the identity of someone or something.
To have a strong affinity with; to feel oneself to be modelled on or connected to.
To associate oneself with some group; to feel, or believe one feels, the same way.
To establish the taxonomic classification of an organism.