New York murder case - it’s chilling (6)
I believe the answer is:
icebox
'chilling' is the definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'new york murder case' is the wordplay.
I cannot quite see how this works, but
'murder' could be 'ice' (slang term) and 'ice' is present in the answer.
'case' could be 'box' (boxing is a kind of casing) and 'box' is found in the answer.
No letters remain.
This explanation may well be incorrect...
'it's' acts as a link.
Can you help me to learn more?
(Other definitions for icebox that I've seen before include "fridge compartment" , "Freezer compartment" , "Insulated cabinet for storing food" , "chiller?" , "cooler" .)