Yes, trunk is a Scrabble word!

Noun

1. The main stem of a tree; usually covered with bark; the bole is usually the part that is commercially useful for lumber

2. Luggage consisting of a large strong case used when traveling or for storage

3. The body excluding the head and neck and limbs

4. Compartment in an automobile that carries luggage or shopping or tools

5. A long flexible snout as of an elephant