Difficult problem in returning horse leading to sharp comment? (7)
I believe the answer is:
epigram
'sharp comment?' is the definition.
'epigram' can be an answer for 'comment?' (I have seen 'witty comment' mean 'epigram' so perhaps 'comment' could also mean 'epigram'). I'm unsure of the 'sharp' bit.
'difficult problem in returning horse' is the wordplay.
'difficult problem' becomes 'pig'.
'in' means one lot of letters goes inside another.
'returning' says the letters should be written backwards.
'horse' becomes 'mare' (mare is a kind of horse).
'mare' backwards is 'eram'.
'pig' going within 'eram' is 'EPIGRAM'.
'leading to' acts as a link.
Can you help me to learn more?
(Other definitions for epigram that I've seen before include "Pithy remark - grim ape (anag)" , "Short witty remark" , "Quip, witty saying" , "Witty or sarcastic saying" , "A clever witty saying" .)