What may be used to identify body of old murder victim? (5)
I believe the answer is:
Here is my best explanation:
'identify body of old murder victim?' is the definition.
'label' can be an answer for 'identify' (thesaurus). I'm not certain of the 'body of old murder victim?' bit.
I can't explain the remainder of the clue.
(Other definitions for label that I've seen before include "Tag; record company", "Tag or designation", "Classifying name", "Descriptive tag", "Designate", "Put a name to", "Give name to", "Tag or trade name", "Tab" and "Name-tag".)