Rhinoceros
Webster's Dictionary [1]
(n.) Any pachyderm belonging to the genera Rhinoceros, Atelodus, and several allied genera of the family Rhinocerotidae, of which several living, and many extinct, species are known. They are large and powerful, and usually have either one or two stout conical median horns on the snout.
International Standard Bible Encyclopedia [2]
rı̄ - nos´ẽr - os : This word is found in the King James Version margin to Isaiah 34:7 ("rhinocerots") for ראמים , re'ēmı̄m , the King James Version "unicorns," the Revised Version (British and American) "wild-oxen." The word is quite inappropriate to the passage, which refers to the land of Edom. The one-horned rhinoceros, Rhinoceros unicornis , is confined to India. Other rhinoceroses are found in India and in equatorial Africa, but it is hardly to be presumed that these animals were meant by the Hebrew writers. See Unicorn .