Yes, punk is a Scrabble word!

Adjective

1. Of very poor quality; flimsy

Noun

1. An aggressive and violent young criminal

2. Substance that smolders when ignited; used to light fuses (especially fireworks)

3. Material for starting a fire

4. A teenager or young adult who is a performer (or enthusiast) of punk rock and a member of the punk youth subculture

5. Rock music with deliberately offensive lyrics expressing anger and social alienation; in part a reaction against progressive rock