Yes, kola is a Scrabble word!
...and is worth 8 points in Scrabble, and 9 points in Words with Friends
kola
Noun
1. Tree bearing large brown nuts containing e.g. caffeine; source of cola extract
2. A Chadic language spoken south of Lake Chad
What Scrabble words can I make with the letters in kola?
3 Letter Words
2 Letter Words