Siamese draw, we hear (4)
I believe the answer is:
thai
'siamese' is the definition.
(I know that siamese can be written as Thai)
'draw we hear' is the wordplay.
'draw' becomes 'tie' (synonyms).
'we hear' indicates a 'sounds like' (homophone) clue.
'tie' is a homophone of 'THAI'.
(Other definitions for thai that I've seen before include "Someone from Bangkok, perhaps" , "Indo-Chinese language" , "Easterner" , "Coming from Bangkok?" , "Person from Bangkok?" .)