Top definition
The rare purple rhinoceros. The purple rhinoceros is very aggressive in nature and will charge at if it feel's threatened. Poached for its thick strangely colored hide, and for its rare black Ivory horn.

Also used to refer to a raging colored male.
the heuk gwai, was a major xyolphus.

and for those not Chinese: Jawrelle was a xylophus after practice yesterday.
by the heuk gwai January 14, 2010
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