They may amuse you to the end of your days (4)
I believe the answer is:
toys
'they' is the definition.
Both the answer and definition are plural nouns.
Maybe they are linked in a way I don't understand?
'amuse you to the end of your days' is the wordplay.
I cannot quite see how this works, but
'to' is found in the answer.
This explanation may well be incorrect...
'may' is the link.
Can you help me to learn more?
(Other definitions for toys that I've seen before include "Amusing items" , "dolls, for example" , "Trifles with playthings" , "Film" , "Things that provide amusement" .)