Are such cards available for trams? (5)
I believe the answer is:
smart
'are' is the definition.
The definition and answer can be both quantities as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'cards available for trams?' is the wordplay.
'trams' can be anagrammed to 'SMART'.
Though, I am unsure how this is indicated.
'such' is the link.
Can you help me to learn more?
(Other definitions for smart that I've seen before include "Quick; tidy; sting" , "Sort of card" , "Rankle; trim" , "astute" , "Bright or dapper" .)