see: get II. noun Etymology: probably from Dutch, literally, hole; akin to Old English geat ~e Date: 1723 a natural or artificial channel or passage, III. noun Etymology: short for Gatling gun Date: 1897 handgun
GAT
Meaning of GAT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012