The Collaborative International Dictionary of English v.0.48:
Calm \Calm\, v. i. [imp. & p. p. Calmed (k[aum]md); p. pr. &
vb. n. Calming.] [Cf. F. calmer. See Calm, n.]
1. To make calm; to render still or quiet, as elements; as,
to calm the winds.
[1913 Webster]
To calm the tempest raised by Eolus. --Dryden.
[1913 Webster]
2. To deliver from agitation or excitement; to still or
soothe, as the mind or passions.
[1913 Webster]
Passions which seem somewhat calmed. --Atterbury.
Syn: To still; quiet; appease; allay; pacify; tranquilize;
soothe; compose; assuage; check; restrain.
[1913 Webster]