Definition of rhinoceros
: any of a family (Rhinocerotidae) of large heavyset herbivorous perissodactyl mammals of Africa and Asia that have one or two upright keratinous horns on the snout and thick gray to brown skin with little hair
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Merriam-Webster unabridged
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Time Traveler for rhinoceros
The first known use of rhinoceros was in the 14th century
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