A stiff game (5)
I believe the answer is:
poker
This clue could be a double definition.
'a stiff' is the first definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'game' is the second definition.
(poker game is a kind of game)
Can you help me to learn more?
(Other definitions for poker that I've seen before include "Epitome of stiffness" , "Pushy person" , "Fire prodder; game" , "A game for the fireplace implement" , "Rod; betting game" .)