They should be charged for toast (7)
I believe the answer is:
glasses
This might be a double definition.
'they' is the first definition.
Both the definition and answer are plural nouns.
Maybe there's a link between them I don't understand?
'charged for toast' is the second definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'should be' is the link.
Can you help me to learn more?
(Other definitions for glasses that I've seen before include "Spectacles; schooners" , "Help in making out" , "Drinks" , "Spectacles; tumblers" , "Specs" .)