chir·u 
(chîr)
(chîr)n.
A goat antelope (Pantholops hodgsonii) of high mountainous regions of the Plateau of Tibet, having long straight horns in the male and an undercoat that is highly prized for its downy wool. Also called Tibetan antelope.
[Of Tibeto-Burman origin; possibly a compound containing a second element akin to Tibetan rwa, -ru, horn.]