It eats almost everything (6,4)

I believe the answer is:

nitric acid

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

'it eats almost everything' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

(Other definitions for nitric acid that I've seen before include "Corrosive liquid" , "component of explosive" , "dangerous stuff?" .)

I've seen this clue in The Globe and Mail.

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.