Fruit fly going around Ireland, note (9)
I believe the answer is:
tangerine
'fruit' is the definition.
(I know that tangerine is a type of fruit)
'fly going around ireland note' is the wordplay.
'fly' becomes 'gnat' (type of insect).
'going around' says the letters should be written in reverse.
'ireland' becomes 'erin' (poetic name for Ireland).
'note' becomes 'e' (musical note).
'gnat' back-to-front is 'tang'.
'tang'+'erin'+'e'='TANGERINE'
(Other definitions for tangerine that I've seen before include "Small orange-like fruit (from North Africa?)" , "Orange-type fruit" , "fruit product" , "Small citrus fruit with a loose skin" , "something juicy being given to press" .)