Yes, mole is a Scrabble word!

Noun

1. The molecular weight of a substance expressed in grams; the basic unit of amount of substance adopted under the Systeme International d'Unites

2. A spy who works against enemy espionage

3. Spicy sauce often containing chocolate

4. A small congenital pigmented spot on the skin

5. A protective structure of stone or concrete; extends from shore into the water to prevent a beach from washing away

6. Small velvety-furred burrowing mammal having small eyes and fossorial forefeet