American entering Malayan kingdom (4)
I believe the answer is:
yank
'american' is the definition.
(Yank is an example)
'entering malayan kingdom' is the wordplay.
'entering' indicates a hidden word.
'YANK' is hidden in the letters of 'malayan kingdom'.
(Other definitions for yank that I've seen before include "American - jerk" , "An informal American - tug him" , "Pull hard suddenly" , "sudden 24D [DRAW] ?" , "Countryman" .)