Yes, farm is a Scrabble word!
...and is worth 9 points in Scrabble, and 10 points in Words with Friends
farm
Verb
1. Be a farmer; work as a farmer
2. Collect fees or profits
3. Cultivate by growing, often involving improvements by means of agricultural techniques
Noun
1. Workplace consisting of farm buildings and cultivated land as a unit
What Scrabble words can I make with the letters in farm?
3 Letter Words
2 Letter Words