Marvin, say, when cycling noted symbol (4)
I believe the answer is:
ankh
'noted symbol' is the definition.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for ankh that I've seen before include "Cross with a loop at the top, symbol of life in ancient Egypt" , "Ancient Egyptian symbol of life - khan (anag)" , "Waylay" , "Sign of life" , "Egyptian cross" .)