TAG

A situation in which two individuals attempting to contact each other by telephone repeatedly do not get a live person and instead trade messages, such as by voice mail.

To accompany, join, or follow; to go with.

To hover an RFID device such as a smartcard over a receiver, often with a graphical user interface, in order to confirm the end of use or one's exit from the vehicle.

To hover an RFID device such as a smartcard over a receiver, often with a graphical user interface, in order to make a payment or gain entry.

To touch a contestant or player in order to do something, such as to remove a runner from play in baseball or to replace a wrestler with a teammate in tag-team wrestling.

Of a baserunner, when a fly ball is hit, to put one's foot on the base one is currently at until the ball is caught. When the ball is caught, the baserunner may attempt to advance to the next base, at the risk of being tagged out.

A situation in which a person unsuccessfully attempts to contact another person by telephone and leaves a message instead, and in which the second person then unsuccessfully attempts to return the initial call and leaves a message for the first person, and so on as if the two are playing a game of tag in which the most recent person to have been left with a message is now designated as "it" (i.e. as the player now obliged to chase the other and to attempt anew to make contact).