How board game ends decisively for patient, perhaps (6)
I believe the answer is:
inmate
'how board' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for inmate that I've seen before include "One held in prison" , "One living in (prison)" , "Someone confined, eg to hospital or prison" , "Lag" , "One in prison/hospital" .)