Beer mugs smashed in sink (8)
I believe the answer is:
submerge
'sink' is the definition.
(I know that submerge is a more specific form of the action sink)
'beer mugs smashed' is the wordplay.
'smashed' indicates an anagram.
'beer'+'mugs'='beermugs'
'beermugs' anagrammed gives 'SUBMERGE'.
'in' acts as a link.
(Other definitions for submerge that I've seen before include "Disappear below surface" , "(Submarine) dive" , "Cover" , "Go under water" , "Put under water" .)