Tag \Tag\, v. t. [imp. & p. p. Tagged; p. pr. & vb. n. Tagging.]

1. To fit with, or as with, a tag or tags.

He learned to make long-tagged thread laces. --Macaulay.

His courteous host . . . Tags every sentence with some fawning word. --Dryden.

2. To join; to fasten; to attach. --Bolingbroke.

3. To follow closely after; esp., to follow and touch in the game of tag. See Tag, a play.

Source: Webster's Revised Unabridged Dictionary (1913)