Definition of monster

• n. - Something of unnatural size, shape, or quality; a prodigy; an enormity; a marvel.
• n. - Specifically , an animal or plant departing greatly from the usual type, as by having too many limbs.
• n. - Any thing or person of unnatural or excessive ugliness, deformity, wickedness, or cruelty.
• a. - Monstrous in size.
• v. t. - To make monstrous.