The Collaborative International Dictionary
Rhinoceros \Rhi*noc"e*ros\ (r[-i]*n[o^]s"[-e]*r[o^]s), n. [L., fr. Gr. "rinoke`rws, "rinoke`rwtos; "ri`s, "rino`s, the nose + ke`ras a horn: cf. F. rhinoc['e]ros. See Horn.] (Zo["o]l.) Any pachyderm belonging to the genera Rhinoceros, Atelodus, and several allied genera of the family Rhinocerotid[ae], 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. Note: The Indian, or white, and the Javan rhinoceroses ( Rhinoceros Indicus and Rhinoceros Sondaicus) have incisor and canine teeth, but only one horn, and the very thick skin forms shieldlike folds. The two or three African species belong to Atelodus, and have two horns, but lack the dermal folds, and the incisor and canine teeth. The two Malay, or East Indian, two-horned species belong to Ceratohinus, in which incisor and canine teeth are present. See Borele, and Keitloa. Rhinoceros auk (Zo["o]l.), an auk of the North Pacific ( Cerorhina monocrata) which has a deciduous horn on top of the bill. Rhinoceros beetle (Zo["o]l.), a very large beetle of the genus Dynastes, having a horn on the head. Rhinoceros bird. (Zo["o]l.)
A large hornbill ( Buceros rhinoceros), native of the East Indies. It has a large hollow hornlike process on the bill. Called also rhinoceros hornbill. See Hornbill.
An African beefeater ( Buphaga Africana). It alights on the back of the rhinoceros in search of parasitic insects.
Wiktionary
n. any of various tropical beetles, mostly of the genus (taxlink Dynastes genus noshow=1), having horns on the head and thorax; a pest on coconuts
WordNet
n. any of various large chiefly tropical beetles having horns on the head; pest on coconuts
Usage examples of "rhinoceros beetle".
It was as if they had fallen headfirst into a nebula, for there were hundreds of them, each burning with ferocious white light, none bigger than a rhinoceros beetle.
If they noticed the enormous rhinoceros beetle slowly making its way across the board, weaving among the chessmen, they gave no sign of that either.
The roachiphant even has a species of tusk adorning its face, but again it seems more like the horn of a rhinoceros beetle (to whom it is perhaps distantly related) than the ivory appendages of the true animal.