Such cyclists are punning professionals (5)
I believe the answer is:
trick
'such cyclists are' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for trick that I've seen before include "Stratagem to take at cards" , "Stratagem - part of card play" , "Skilful feat" , "Kid" , "Deception - round of cards in bridge" .)