Yes, topi is a Scrabble word!
...and is worth 6 points in Scrabble, and 7 points in Words with Friends
topi
Noun
1. A lightweight hat worn in tropical countries for protection from the sun
2. A large South African antelope; considered the swiftest hoofed mammal
What Scrabble words can I make with the letters in topi?
3 Letter Words
2 Letter Words