Definition of westie:
(n) :
(informal) A West Highland White Terrier.
(n) :
(slang, derogatory) An inhabitant of the western suburbs of a city or town, stereotyped as of working class status and poor.
(n) :
(Australia) An inhabitant of the western suburbs of Sydney or Melbourne.
(n) :
(New Zealand) An inhabitant of the western suburbs of Auckland.
(n) :
(slang, Contemporary Christian) An intense fan of the Christian singer Matthew West.
(n) :
(US) A member of a criminal gang based in Hell's Kitchen on the west side of Manhattan.