Crossword Genius

A stony mug (5)

Ross

I believe the answer is:

stein

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

'mug' is the definition.
(I know that stein is a type of mug)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for stein that I've seen before include "Large earthenware beer mug" , "German earthenware beer mug" , "Inset into earthenware mug for beer" , "Inset (anag.)" , "Gertrude __, avant-garde US author, d. 1946" .)

I've seen this clue in the Evening Standard.
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.