any one of various blister beetles of genus Meloe that exude an oily yellowish substance from the joints associated with the feet whenever disturbed.
any beetle of the genus Meloe and allied genera. When disturbed they emit from the joints of the legs a yellowish oily liquor. Some species possess vesicating properties, and are used instead of cantharides.
Any coleopterous pest of the genus Meloë in an extensive sense: so called from the oil-like matter that they exude.
any one of different beetles that exude an oily compound from leg joints that deters enemies