Yes, puck is a Scrabble word!
...and is worth 12 points in Scrabble, and 15 points in Words with Friends
puck
Noun
1. A mischievous sprite of English folklore
2. A vulcanized rubber disk 3 inches in diameter that is used instead of a ball in ice hockey
What Scrabble words can I make with the letters in puck?
3 Letter Words
2 Letter Words