Definitions for mealybugˈmi liˌbʌg
Random House Webster's College Dictionary
any of several scalelike homopterous insects of the families Pseudococcidae and Eriococcidae that are covered with a powdery wax secretion and feed on plants.
Origin of mealybug:
mealybug, mealy bug(noun)
scalelike plant-eating insect coated with a powdery waxy secretion; destructive especially of fruit trees
Any of various insects of the family Pseudococcidae, that secrete a powdery wax and are pests of fruit trees.