Corner within Sligo hospital in a roundabout way (3)
I believe the answer is:
hog
'corner' is the definition.
(I've seen this in other clues)
'within sligo hospital in a roundabout way' is the wordplay.
'within' indicates a hidden word.
'in a roundabout way' says the letters should be written in reverse.
'goh' is hidden in the letters of 'sligo hospital'.
'goh' backwards is 'HOG'.
(Other definitions for hog that I've seen before include "Take more than one's share" , "source of meat" , "Domestic adult swine" , "Selfishly keep" , "Monopolise" .)