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rhinoceros beetle

noun
  1. any of several scarabaeid beetles, especially of the genus Dynastes, which comprises the largest beetles, characterized by one or more horns on the head and prothorax.
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Origin of rhinoceros beetle

First recorded in 1675–85
Also called dynastid.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for rhinoceros beetle

rhinoceros beetle

noun
  1. any of various scarabaeid beetles having one or more horns on the head, esp Oryctes rhinoceros, a serious pest on coconut plantations
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012