It's not gross to eat with pond inhabitant (4)
I believe the answer is:
newt
'pond inhabitant' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'it's not gross to eat with' is the wordplay.
'it's not gross' becomes 'net' ('net' is the opposite to 'gross').
'to eat' indicates putting letters inside.
'with' becomes 'w' (abbreviation).
'net' going around 'w' is 'NEWT'.
Can you help me to learn more?
(Other definitions for newt that I've seen before include "Went to find kind of water lizard" , "Went to find a sort of eft" , "Semiaquatic amphibian" , "Pond creature" , "Scientist" .)