Hiatus in Singapore (3)
I believe the answer is:
gap
'hiatus' is the definition.
(thesaurus)
'in singapore' is the wordplay.
'in' indicates the answer is hidden within the clue.
'GAP' is hidden within 'singapore'.
(Other definitions for gap that I've seen before include "A break in something continuous, like a hedge" , "Break, hole, space" , "Pause" , "Room" , "Break in continuity" .)