TAG

a label attached to someone or something for the purpose of identification or to give other information

a small piece or part that is attached to a main body.

a frequently repeated quotation or stock phrase

attach a label to

add to something, especially as an afterthought or with no real connection

shear away ragged locks of wool from (sheep).

a children's game in which one child chases the others and anyone who is caught then becomes the pursuer

touch (someone being chased) in a game of tag.