A Quick and Simple Dictionary

tag

1. Noun.  A small label.
2. Noun.  A game played by two or more children in which one child (known as "it") attempts to catch one of the others, who then becomes "it".
3. Noun.  A skin tag, an excrescence of skin.
4. Noun.  A type of cardboard.
5. Noun.  Graffiti in the form of a stylized signature particular to the person who makes the graffiti.
6. Noun.  A dangling lock of sheep's wool, matted with dung; a dung tag.
7. Noun.  An attribution in narrated dialogue (eg, "he said").
8. Noun.  (chiefly, US) a vehicle number plate; a medal bearing identification data (animals, soldiers).
9. Noun.  (baseball) An instance of touching the baserunner with the ball or the ball in a gloved hand.
10. Noun.  (computing) A piece of markup representing an element in a markup language.
11. Noun.  (by extension, Internet slang) A piece of text which is worded like an element of a markup language to provide context.
12. Noun.  (computing) A keyword, term, or phrase associated with or assigned to data, media, and/or information enabling keyword-based classification; often used to categorize content.
13. Verb.  (transitive) To label (something).
14. Verb.  (transitive, graffiti) To mark (something) with one’s tag.
15. Verb.  (transitive) To remove dung tags from a sheep.
16. Verb.  (transitive, baseball) To hit the ball hard.
17. Verb.  (transitive, baseball) To put a runner out by touching them with the ball or the ball in a gloved hand.
18. Verb.  (transitive, computing) To mark with a tag (metadata for classification).