Noun

(en-noun)

(obsolete) A vast chasm or abyss.

The unordered state of matter in classical accounts of cosmogony

Any state of disorder, any confused or amorphous mixture or conglomeration.

*

(obsolete, rare) A given medium; a space in which something exists or lives; an environment.

*, II.ii.3:

What is the centre of the earth? is it pure element only, as Aristotle decrees, inhabited (as Paracelsus thinks) with creatures whose chaos is the earth: or with fairies, as the woods and waters (according to him) are with nymphs, or as the air with spirits?

(mathematics) Behaviour of iterative non-linear systems in which arbitrarily small variations in initial conditions become magnified over time.

(fantasy) One of the two metaphysical forces of the world in some fantasy settings, as opposed to law.

Noun

(en noun)

A storm, especially one with severe winds.

* 1847 , (Herman Melville), Omoo: A Narrative of Adventures in the South Seas , ch. 16:

As every sailor knows, a spicy gale in the tropic latitudes of the Pacific is far different from a tempest in the howling North Atlantic.

*{{quote-book, year=1892, author=(James Yoxall)

, chapter=5, title= The Lonely Pyramid , passage=The desert storm was riding in its strength; the travellers lay beneath the mastery of the fell simoom.

Any violent tumult or commotion.

* 1914 , (Ambrose Bierce), "One Officer, One Man":

They awaited the word "forward"—awaited, too, with beating hearts and set teeth the gusts of lead and iron that were to smite them at their first movement in obedience to that word. The word was not given; the tempest did not break out.

(label) A fashionable social gathering; a drum.

(Smollett)