Emily Dickinson Lexicon

CALM, a. [càm; Fr. calme; Sp. calma; It. calma; D. kalm. Qu. Gr. χαλαω; It. calare, to decrease or abate; Sp. calar, to sink.]

1. Still; quiet; being at rest; as the air. Hence, not stormy or tempestuous; as, a calm day.
2. Undisturbed; not agitated; as, a calm sea.
3. Undisturbed by passion; not agitated or excited; quiet; tranquil; as the mind, temper, or attention.