Yes, hoof is a Scrabble word!
...and is worth 10 points in Scrabble, and 9 points in Words with Friends
hoof
Verb
1. Walk
2. Dance in a professional capacity
Noun
1. The foot of an ungulate mammal
2. The horny covering of the end of the foot in ungulate mammals
What Scrabble words can I make with the letters in hoof?
3 Letter Words
2 Letter Words