one-horned rhinoceros
noun
variants or one-horned rhino
: either of two Asian rhinoceroses (genus Rhinoceros) having a single horn:
a
: indian rhinoceros
b
: javan rhinoceros
Example Sentences
Recent Examples on the Web The tiger is believed to be have come from the neighboring Kaziranga National Park, a UNESCO World Heritage site, home to tigers, elephants, bears, and the world's largest population of one-horned rhinoceroses. 
Zoe Sottile And Manveena Suri, CNN, 19 July 2019 One male and two female calves one-horned rhinoceros, who were rescued during monsoon floods over the past two years from a famed wildlife preserve in India’s northeast, were on Friday transported to a local zoo for breeding. Washington Post, 13 Oct. 2017
Zoe Sottile And Manveena Suri, CNN, 19 July 2019 One male and two female calves one-horned rhinoceros, who were rescued during monsoon floods over the past two years from a famed wildlife preserve in India’s northeast, were on Friday transported to a local zoo for breeding. Washington Post, 13 Oct. 2017 Word History
First Known Use
1835, in the meaning defined above