Descriptive of a sharp drop in sweet production (4)
I believe the answer is:
acid
'drop in sweet production' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'descriptive of a sharp' is the wordplay.
I cannot really understand how this works, but
'a' is within the answer.
The remaining letters 'cid' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for acid that I've seen before include "Vinegary" , "Caustic liquid of many kinds" , "Tart - keen - sort of house party" , "Corrosive fluid" , "Acerbic" .)