coma

Pronunciation: /ˈkəʊmə/

The English word “coma” has 4 meanings listed here.

noun

A state of unconsciousness from which one may not wake up, usually induced by some form of trauma.
A cloud of dust surrounding the nucleus of a comet.
A defect characterized by diffuse, pear-shaped images that in an ideal image would appear as points.
A tuft or bunch, such as the assemblage of branches forming the head of a tree, a cluster of bracts when empty and terminating the inflorescence of a plant, or a tuft of long hairs on certain seeds.

Learned borrowing from Ancient Greek κῶμα (kôma, “deep sleep”).

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.