Spit out fruit 3 (4)
I believe the answer is:
pits
'fruit 3' is the definition.
Although both the answer and '3' are nouns, they are not in the same form of the noun.
'spit out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'spit' anagrammed gives 'PITS'.
Can you help me to learn more?
(Other definitions for pits that I've seen before include "Deep holes in the ground" , "Mines" .)