COMA, noun Lethargy; dozing; a preternatural propensity to sleep; a kind of stupor of diseased persons.
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.