Irish county likely to lose the light? (7)
I believe the answer is:
wicklow
'irish county' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for wicklow that I've seen before include "Irish port, town, county" , "part of Ireland?" , "Irish county team" , "port buildings here in Ireland" .)