Said drunkenly one had a haircut (7)
I believe the answer is:
shingle
'haircut' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for shingle that I've seen before include "Bob" , "Small beach pebbles" , "beach? Yes and no" , "Loose stones" , "A mass of seashore pebbles" .)