ˈmi:lɪ adj. (mealier, mealiest) 1 a of or like meal; softand powdery. b containing meal. 2 (of a complexion) pale. 3 (of a horse) spotty. 4 (in full mealy-mouthed) notoutspoken; afraid to use plain expressions. ømealy buganyinsect of thegenus Pseudococcus, infesting vines etc., whosebody is covered withwhitepowder. øømealiness n.