Stag drunk right after party gets shiner (3,4)
I believe the answer is:
dog star
'shiner' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'stag drunk right after party' is the wordplay.
'drunk' indicates anagramming the letters.
'right' becomes 'r' (abbreviation).
'after' says to put letters next to each other.
'party' becomes 'do' (do can informally mean a party).
'stag' with letters rearranged gives 'gsta'.
'gsta'+'r'='gstar'
'gstar' put after 'do' is 'DOG-STAR'.
'gets' is the link.
Can you help me to learn more?
(Other definitions for dog star that I've seen before include "Drags to find other name for Sirius" , "heavenly body?" , "Sirius in the sky" , "Sirius may also be arts god" , "'Another name for the Sirius constellation (3,4)'" .)