Attached Link: Merriam-Webster

Main Entry: tag Function: verb Inflected Form(s): tagged; tagging Date: 15th century transitive senses 1 : to provide or mark with or as if with a tag: as a : to supply with an identifying marker or price b : to provide with a name or epithet : LABEL, BRAND c : to put a ticket on (a motor vehicle) for a traffic violation 2 : to attach as an addition : APPEND 3 : to follow closely and persistently 4 : to hold to account; especially : to charge with violating the law 5 : LABEL 2 intransitive senses : to keep close [tagging at their heels -- Corey Ford] - or - Main Entry: tag Function: transitive verb Inflected Form(s): tagged; tagging Date: 1878 1 a : to touch in or as if in a game of tag b : to put out (a runner) in baseball by a touch with the ball or the gloved hand containing the ball 2 : to hit solidly 3 : to choose usually for a special purpose : SELECT 4 : to make a hit or run off (a pitcher) in baseball Taken from the dictionary's mouth. Now, if we could decipher which meaning has been used, we would all be better off. ;0)