Antipodean army chap embraced by Welsh girl (9)
I believe the answer is:
tasmanian
'antipodean' is the definition.
(Tasmania is part of the Antipodes)
'army chap embraced by welsh girl' is the wordplay.
'army' becomes 'TA' (abbreviation for Territorial Army).
'chap' becomes 'man' (chap can mean a man).
'embraced by' indicates putting letters inside.
'welsh girl' becomes 'sian' (common Welsh name).
'man' going into 'sian' is 'smanian'.
'ta'+'smanian'='TASMANIAN'
(Other definitions for tasmanian that I've seen before include "Ferocious Australian marsupial" , "Aussie statesman" , "of island" , "From one Australian state" , "Islander" .)