Yes, oval is a Scrabble word!
...and is worth 7 points in Scrabble, and 9 points in Words with Friends
oval
Adjective
1. Rounded like an egg
Noun
1. A closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it
What Scrabble words can I make with the letters in oval?
3 Letter Words
2 Letter Words