Noteworthy protectors (4)
I believe the answer is:
pads
'noteworthy protectors' is the definition.
Although both the answer and definition are plural nouns, I can't see how they can define each other.
This is the entire clue.
Can you help me to learn more?
(Other definitions for pads that I've seen before include "Cricket leg-guards" , "Fleshes out" , "Quarters" , "Protective guards worn by sportspeople" , "tablets" .)