Yes, crush is a Scrabble word!

Verb

1. Come down on or keep down by unjust use of one's authority

2. To compress with violence, out of natural shape or condition

3. Come out better in a competition, race, or conflict

4. Break into small pieces

5. Humiliate or depress completely

6. Crush or bruise

7. Make ineffective

8. Become injured, broken, or distorted by pressure

Noun

1. Leather that has had its grain pattern accentuated

2. A dense crowd of people

3. Temporary love of an adolescent

4. The act of crushing