Yes, crude is a Scrabble word!

Adjective

1. Not carefully or expertly made

2. Conspicuously and tastelessly indecent

3. Not refined or processed

4. Belonging to an early stage of technical development; characterized by simplicity and (often) crudeness

5. Devoid of any qualifications or disguise or adornment

6. Not processed or subjected to analysis

Noun

1. A dark oil consisting mainly of hydrocarbons