TA

Noun

 * 1)   a type of TCAS warning.
 * 1)   a type of TCAS warning.
 * 1)   a type of TCAS warning.
 * 1)   a type of TCAS warning.
 * 1)   a type of TCAS warning.

Verb

 * 1)  To act as a teaching assistant (for a class).

Pronoun

 * 1)   they; them

Proper noun

 * 1)  (Mexican state)