Yes, vars is a Scrabble word!
...and is worth 7 points in Scrabble, and 8 points in Words with Friends
vars
Noun
1. A unit of electrical power in an AC circuit equal to the power dissipated when 1 volt produces a current of 1 ampere
What Scrabble words can I make with the letters in vars?
3 Letter Words
2 Letter Words