Of the nature of meal; resembling or having the qualities of meal; pulverulent: as, a mealy powder: a mealy potato; a mealy apple.Covered or overspread with meal or with some powdery substance resembling meal.Specifically— In ornithology, having the plumage whitened as if dusted over with flour; hoary; canescent.In entomology, mealy-winged.In botany, same as farinosc.Pale-colored; light or white in hue, like meal: as, a mealy complexion.Mealy-mouthed.Starchy; farinaceous. See starchy, 2.