Crossword Genius

Nick isn't finished with fossil fuel (3)

Ross

I believe the answer is:

gas

I'm a little stuck... Click here to teach me more about this clue!

'fossil fuel' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for gas that I've seen before include "Substance like air" , "eg Helium" , "Chatter (colloq.)" , "Gossip" , "Nitrogen, say" .)

I've seen this clue in the Irish Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.