Drink around fourth-rate spot, one shouldn't go down here (8)
I believe the answer is:
windpipe
'one shouldn't go down here' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'drink around fourth-rate spot' is the wordplay.
'drink' becomes 'wine' (wine is an alcoholic drink).
'around' is an insertion indicator.
'fourth rate' becomes 'D' (fourth best category after A, B and C).
'spot' becomes 'pip' (both can mean a small amount).
'd'+'pip'='dpip'
'wine' going around 'dpip' is 'WINDPIPE'.
Can you help me to learn more?
(Other definitions for windpipe that I've seen before include "The trachea, less formally" , "The literal trachea" , "Common name for the trachea" , "airline" , "It conveys air from the larynx to the lungs" .)