Yes, lour is a Scrabble word!
...and is worth 4 points in Scrabble, and 6 points in Words with Friends
lour
Verb
1. Set lower
2. Make lower or quieter
3. Look angry or sullen, wrinkle one's forehead, as if to signal disapproval
What Scrabble words can I make with the letters in lour?
3 Letter Words
2 Letter Words