Yes, scarf is a Scrabble word!

Verb

1. Masturbate while strangling oneself

2. Unite by a scarf joint

3. Wrap in or adorn with a scarf

Noun

1. A garment worn around the head or neck or shoulders for warmth or decoration

2. A joint made by notching the ends of two pieces of timber or metal so that they will lock together end-to-end