noun.
Any of several large European scarab beetles of the genus Melolontha, especially M. melolontha, having larvae that damage plant roots and adults that feed on leaves.
The Century Dictionary and Cyclopedia
noun.
The popular name of a very common lamellicorn beetle of Europe, Melolontha vulgaris. Also called May-beetle, May-bug, dor-beetle, and dor-bug.
noun.
Any one of various similar or related beetles.
the GNU version of the Collaborative International Dictionary of English
noun.
A beetle of the genus Melolontha (esp. Melolontha vulgaris) and allied genera; -- called also May bug, chafer, or dorbeetle.