Bulge spotted in Darcy's trousers (4)
I believe the answer is:
cyst
'bulge' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'spotted in darcy's trousers' is the wordplay.
'spotted in' indicates the answer is hidden within the clue.
'CYST' is hidden within 'darcys trousers'.
Can you help me to learn more?
(Other definitions for cyst that I've seen before include "Sac, growth" , "Benign growth" , "Bag of fluid" , "Fluid-filled sac (med.)" , "Small growth" .)