Definition of "rhinoceros" noun plural rhinoceros or rhinoceroses or (uncommon ) rhinocerosses or (nonstandard ) rhinoceri or (nonstandard ) rhinoceroi or (now rare ) rhinocerotes
Any of several large herbivorous ungulates native to Africa and Asia of the five extant species in the three extant genera in the family Rhinocerotidae , with thick , gray skin and one or two horns on their snouts . quotations examples
Quotations Herein therefore to draw up our determinations beside the several pieces of Scripture mentioning this Animal (which some may well contend to be only meant of the Rhinoceros we are so far from denying there is any Unicorn at all , that we affirme there are many kinds thereof . In the number of Quadrapedes we will concede no less then five ; that is the Indian Oxe , Indian Ass , Rhinoceros the Oryx , and that which is more eminently termed Monoceros , or Unicornis .
1658, Thomas Brown, “Of Unicorns Horn”, in Pseudodoxia Epidemica: Or Enquiries Into Very many Received Tenents And commonly Presumed Truths. The Fourth Edition, page 203