Yes, bubo is a Scrabble word!
...and is worth 8 points in Scrabble, and 11 points in Words with Friends
bubo
Noun
1. A lymph node that is inflamed and swollen because of plague or gonorrhea or tuberculosis
2. A genus of Strigidae
What Scrabble words can I make with the letters in bubo?
3 Letter Words
2 Letter Words