One's pet stiffener? (6)
I believe the answer is:
setter
This clue could be a double definition.
'one's' is the first definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'pet stiffener?' is the second definition.
The answer and definition can be both animals as well as being singular nouns.
Maybe they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for setter that I've seen before include "Silky-coated gun dog" , "puzzle constructor" , "Thematic type [DOG]" , "Crossword composer" , "It helps to locate game" .)