City without borders beginning to weary mean residents (7)
I believe the answer is:
swansea
'city' is the definition.
(Swansea is an example)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for swansea that I've seen before include "South Wales city" , "Ecstasy, a win! (anag)" , "Welsh port" , "South Wales port" , "Welsh city" .)