In hearing, why quit trials? (6)
I believe the answer is:
trouts
'in hearing why quit trials?' is the definition.
Although both the answer and definition are plural nouns, I can't understand how they can define each other.
This is the entire clue.
Can you help me to learn more?
(Other definitions for trouts that I've seen before include "Plural fish, speckled, rainbow etc" , "rainbow or brown fish, optional plural" .)