It's worn in two places, but very little (6)
I believe the answer is:
bikini
'very little' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'it's worn in two places' is the wordplay.
I cannot really understand how this works, but
'in' is within the answer.
This may be the basis of the clue (or it may be nonsense).
'but' is the link.
Can you help me to learn more?
(Other definitions for bikini that I've seen before include "Atoll and swimming costume" , "A small two -piece bathing costume" , "Two piece swimsuit" , "Dress" , "offering scanty cover" .)