Hard to heave or lift; having much weight or gravity; ponderous: as, a heavy load.Having much weight in proportion to bulk; dense in substance or texture; of high specific gravity, absolutely or relatively: as, the heavy metals; a heavy silk or paper; water is heavier than oil.Of great volume, force, intensity, etc.; of unusual amount or bulk: used of things: as, a heavy fall of rain; a heavy sea; heavy sleep; a heavy meal; a heavy order for goods.Acting, operating, or affected in a large way; doing or suffering something to a great extent or amount: used of persons: as, a heavy dealer in stocks; a heavy buyer.Exceptionally dense in substance or quality, as a fluid; specifically, not properly raised or leavened, as bread; having much body or strength, as wine or beer; thick or viscid, as an oil; loaded with moisture or vapors, as the air; oppressive or producing languor, as an odor.Having comparatively much breadth or thickness; coarse; thick: as, a heavy line in drawing; a heavy scar.Lacking lightness or brightness; without cheerfulness or interest; dull, stupid, weari-some, or depressing: as, a heavy countenance; a heavy book or style.Dull or sluggish; without animation, activity, or briskness of movement: as, a heavy gait; a heavy market.Obstructive; clogging or hindering passage or progress: as, a heavy road or track; heavy soil; his debts are a heavy drag upon him.Weighed or bowed down as with a burden; oppressed, physically or mentally: as, eyes heavy with sleep; a heavy heart.Hard to bear or endure; burdensome; oppressive; afflicting; severe: as, a heavy pain; a heavy reckoning; heavy penalties.Difficult of accomplishment; hard to do or perform; hard to fulfil or discharge: as, a heavy task or undertaking.Sober; serious; relating or pertaining to the representation of didactic or somber parts: as, the heavy father; the heavy villain; the piece has much heavy business. 13. Milit., same as heavy-armed: as, heavy cavalry (meaning cuirassiers and the like).Theat., those who play heavy parts. See def. 12. People who are heavy.To make heavy; grieve.To become heavy or sad.Having the disease called heaves: as, a heavy horse.n. The heavy part in a theatrical representation in which the dignity and self-importance of successful middle life are portrayed.n. The actor who takes this part.n. A member of the heavy cavalry or artillery: usually in the plural.