Usual wish for a happy retirement? (4,5)
I believe the answer is:
good night
This could be a double definition.
'usual wish' is the first definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'happy retirement?' is the second definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'for a' is the link.
Can you help me to learn more?
(Other definitions for good night that I've seen before include "last message" , "Final greeting" .)