Yes, gar is a Scrabble word!
...and is worth 4 points in Scrabble, and 5 points in Words with Friends
gar
Noun
1. Primitive predaceous North American fish covered with hard scales and having long jaws with needlelike teeth
2. Elongate European surface-dwelling predacious fishes with long toothed jaws; abundant in coastal waters
What Scrabble words can I make with the letters in gar?
3 Letter Words
2 Letter Words