Drunk sank, close to coma, falling for reeling Brit (5)
I believe the answer is:
skunk
'brit' is the definition.
The definition and answer can be both animals as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for skunk that I've seen before include "Animal with foul scent" , "Smelly animal" , "Mammal using scent as a weapon" , "Marijuana - scumbag" , "rat" .)