Stick around Midway, a Pacific island (4)
I believe the answer is:
guam
'pacific island' is the definition.
(I've seen this before)
'stick around midway a' is the wordplay.
I cannot really see how this works, but
'a' is found in the answer.
'stick' could be 'gum' (gum can mean to glue or stick) and 'gum' is present in the remaining letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for guam that I've seen before include "North Pacific island, base for the US navy and air force" , "Largest of the Mariana Islands" , "place in the Marianas" , "Island in the West Pacific" , "NW Pacific island with large US base" .)