Yes, pomo is a Scrabble word!
...and is worth 8 points in Scrabble, and 10 points in Words with Friends
pomo
Noun
1. A member of an Indian people of northern California living along the Russian River valley and adjacent Pacific coast
2. The Kulanapan language spoken by the Pomo
What Scrabble words can I make with the letters in pomo?
3 Letter Words
2 Letter Words