Boozy capacity of female briefly irritating (6)
I believe the answer is:
firkin
'boozy capacity' is the definition.
The answer and definition can be both quantities as well as being singular nouns.
Perhaps there's an association between them I don't understand?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for firkin that I've seen before include "Brewing measure of nine gallons" , "Brewing measure equal to 9 gallons" , "Small wooden barrel - nine gallons" , "Small cask for liquids, butter, fish" , "Cooper's little effort" .)