Yes, brim is a Scrabble word!
...and is worth 8 points in Scrabble, and 10 points in Words with Friends
brim
Verb
1. Be completely full
2. Fill as much as possible
Noun
1. The top edge of a vessel or other container
2. A circular projection that sticks outward from the crown of a hat
What Scrabble words can I make with the letters in brim?
3 Letter Words
2 Letter Words