Large number work to dismiss one in city (7)
I believe the answer is:
seattle
'city' is the definition.
(Seattle is an example)
'large number work to dismiss one' is the wordplay.
I cannot quite understand how this works, but
'large' could be 'l' and 'l' is present in the answer.
'number' could be 'e' (e is a kind of number) and 'e' is present in the answer.
'one' could be 'a' and 'a' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for seattle that I've seen before include "coastal city" , "American city" , "Sleepless in --, film" , "Let's eat at this US city" , "city in north-west America" .)