Yes, whip is a Scrabble word!

Verb

1. Beat severely with a whip or rod

2. Defeat thoroughly

3. Thrash about flexibly in the manner of a whiplash

4. Strike as if by whipping

5. Whip with or as if with a wire whisk

6. Subject to harsh criticism

Noun

1. An instrument with a handle and a flexible lash that is used for whipping

2. A legislator appointed by the party to enforce discipline

3. A dessert made of sugar and stiffly beaten egg whites or cream and usually flavored with fruit

4. (golf) the flexibility of the shaft of a golf club

5. A quick blow delivered with a whip or whiplike object