Definition
"Blue bull" is a common name for the nilgai, a large Asian antelope. The name specifically refers to the adult males, which have a distinctive bluish-gray coat. Females and young nilgai have a tan or brownish color. "Blue bull" is a descriptive and easily recognizable term for this animal. It's like calling a giraffe a "long-necked animal" – simple and to the point. 🦒