Yes, shake is a Scrabble word!

Verb

1. Move or cause to move back and forth

2. Move with or as if with a tremor

3. Shake or vibrate rapidly and intensively

4. Move back and forth or sideways

5. Undermine or cause to waver

6. Stir the feelings, emotions, or peace of

7. Get rid of

8. Bring to a specified condition by or as if by shaking

9. Shake (a body part) to communicate a greeting, feeling, or cognitive state

Noun

1. Building material used as siding or roofing

2. Frothy drink of milk and flavoring and sometimes fruit or ice cream

3. A note that alternates rapidly with another note a semitone above it

4. Grasping and shaking a person's hand (as to acknowledge an introduction or to agree on a contract)

5. A reflex motion caused by cold or fear or excitement

6. Causing to move repeatedly from side to side