They may be game to take the helm we hear (5)
I believe the answer is:
cocks
'they' is the definition.
Both the answer and definition are plural nouns.
Perhaps you can see a link between them that I don't see?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for cocks that I've seen before include "Male birds" , "Raises" , "poultry" , "Roosters" , "Adult male chickens" .)