Grammys category (3)
I believe the answer is:
rap
'grammys category' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rap that I've seen before include "Knock - punishment - monologue to music" , "Hit - "songs" by Snoop Dogg and Jay-Z, say" , "Knock, tap" , "Form of music with chanted rhyming lyrics" , "Censure" .)