Nameless Cambridge college keeps university groups waiting (6)
I believe the answer is:
queues
'groups waiting' is the definition.
Although both the answer and definition are verbs in their -s form, I can't understand how one could define the other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for queues that I've seen before include "Lines of waiting people or vehicles" , "Lines of waiters" , "lots of waiters" , "Line of waiting people or vehicles" , "Waits in line" .)