Crossword Genius

Urinal eruption possibly counts? (7)

Ross

I believe the answer is:

peerage

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

'urinal' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for peerage that I've seen before include "The whole of the British nobility" , "Ranks of the nobility" , "The nobility en masse" , "The nobility as a group" , "Lordly group" .)

I've seen this clue in the Sydney Morning Herald.
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.