adj monstrous in size.
2. monster ·vt to make monstrous.
3. monster ·noun something of unnatural size, shape, or quality; a prodigy; an enormity; a marvel.
4. monster ·noun any thing or person of unnatural or excessive ugliness, deformity, wickedness, or cruelty.
5. monster ·noun specifically , an animal or plant departing greatly from the usual type, as by having too many limbs.