Any insect of the order coleoptera, having four wings, the outer pair being stiff cases for covering the others when they are folded up. See coleoptera.
(Science: zoology) beetle mite, one of many species of mites, of the family Oribatidae, parasitic on beetles. Black beetle, the common large black cockroach (blatta orientalis).
Origin: oe. Bityl, bittle, as. Btel, fr. Btan to bite. See bite.