Real Dictionary

dermestid in American English
any of a family (Dermestidae) of small, drab-colored beetles whose larvae and adults are destructive to hides, furs, woolens, cereals, etc.

dermestid in British English
noun: any beetle of the family Dermestidae, whose members are destructive at both larval and adult stages to a wide range of stored organic materials such as wool, fur, feathers, and meat. They include the bacon (or larder), cabinet, carpet, leather, and museum