Game's ending pal! (4)
I believe the answer is:
mate
This might be a double definition.
'game's ending' is the first definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'pal' is the second definition.
(both can mean a friend)
Can you help me to learn more?
(Other definitions for mate that I've seen before include "provides solution to chess problem" , "Perhaps the wife" , "Match" , "Final move in chess" , "couple" .)