definition of
tag

[1] #1 tag n. [ticket] a label written or printed on paper, cardboard, or plastic that is attached to something to indicate its owner, nature, price, etc.. wn

[2] #2 tag v. [label, mark] attach a tag or label to; "label these bottles". wn

[3] #3 tag v. touch a player while he is holding the ball. wn

[4] #4 tag v. provide with a name or nickname. wn

[5] #5 tag n. a label associated with something for the purpose of identification; "semantic tags were attached in order to identify different meanings of the word". wn