Party on Wicklow river in honour of pear-shaped fruit (7)
I believe the answer is:
avocado
'pear-shaped fruit' is the definition.
(I've seen this before)
'party on wicklow river in honour of' is the wordplay.
I cannot quite see how this works, but
'party' could be 'do' (do can informally mean a party) and 'do' is located in the answer.
'of' could be 'o' and 'o' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for avocado that I've seen before include "Alligator pear" , "Tropical fruit with a yellow creamy flesh" , "Savoury pear-shaped fruit" , "Green - fruit eaten as a vegetable" , "Savoury pear" .)