Yes, gram is a Scrabble word!
...and is worth 7 points in Scrabble, and 9 points in Words with Friends
gram
Noun
1. A metric unit of weight equal to one thousandth of a kilogram
2. Danish physician and bacteriologist who developed a method of staining bacteria to distinguish among them (1853-1938)
What Scrabble words can I make with the letters in gram?
3 Letter Words
2 Letter Words