Noteworthy protectors (4)
I believe the answer is:
pads
'noteworthy protectors' is the definition.
Although both the answer and definition are plural nouns, I cannot 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" .)