nilgai

noun, plural nil·gais, (especially collectively) nil·gai.

1. a large, Indian antelope, Boselaphus tragocamelus, the male of which is bluish gray with small horns, the female tawny and hornless.

noun plural -gai, -gais, -ghau or -ghaus

1. a large Indian antelope, Boselaphus tragocamelus. The male is blue-grey with white markings and has small horns; the female is brownish and has no horns