an assemblage of parts that is regarded as a single entity

a man-made object taken as a whole

silky envelope spun by the larvae of many insects to protect pupas and by spiders to protect eggs

the entire physical structure of an organism (an animal, plant, or human being)

a natural object consisting of a dead animal or person

(astronomy) a cluster of stars (or a small constellation)

a hypothetical object capable of absorbing all the electromagnetic radiation falling on it