Pronunciation: (rī-nos'ur-us), [key]
—pl. -os•es, (esp. collectively) -os.
1. any of several large, thick-skinned, perissodactyl mammals of the family Rhinocerotidae, of Africa and India, having one or two upright horns on the snout: all rhinoceroses are endangered.
2. Douay Bible.unicorn (def. 4).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.