Webster's Revised Unabridged Dictionary · 1913

Calm

Calm (kam) , noun

[Old English calme, French calme, from Italian or Sp. calma (compare Portuguese calma heat), prob. from Late Latin cauma heat, from Greek kay^ma burning heat, from kai`ein to burn; either because during a great heat there is generally also a calm, or because the hot time of the day obliges us seek for shade and quiet; compare Caustic]

Freedom from motion, agitation, or disturbance; a cessation or absence of that which causes motion or disturbance, as of winds or waves; tranquility; stillness; quiet; serenity.
The wind ceased, and there was a great calm. — Mark. iv. 39
A calm before a storm is commonly a peace of a man's own making. — South

Calm (kamd) , intransitive verb

[Compare French calmer. See Calm, n.]

1.
To make calm; to render still or quiet, as elements; as, to calm the winds.
To calm the tempest raised by Eolus. — Dryden
2.
To deliver from agitation or excitement; to still or soothe, as the mind or passions.
Passions which seem somewhat calmed. — Atterbury

Calm (kam) , adjective

1.
Not stormy; without motion, as of winds or waves; still; quiet; serene; undisturbed.
Calm was the day. — Spenser
Now all is calm, and fresh, and still. — Bryant
2.
Undisturbed by passion or emotion; not agitated or excited; tranquil; quiet in act or speech.
Calm and sinless peace. — Milton
With calm attention. — Pope
Such calm old age as conscience pure And self-commanding hearts ensure. — Keble