COMA, noun Lethargy; dozing; a preternatural propensity to sleep; a kind of stupor of diseased persons. COMA, noun 1. In botany, a species of bracte, terminating the stem of a plant, in a tuft or bush; as in crown-imperial. 2. In astronomy, hairiness; the hairy appearance that surrounds a comet, when the earth or the spectator is between the comet and the sun.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI