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 distressful or dangerous situation.

A difficulty, problem, condition, or action contributing to such a situation.

* (John Milton)

Lest the fiend some new trouble raise.

* (William Shakespeare)

Foul whisperings are abroad; unnatural deeds / Do breed unnatural troubles .

A violent occurrence or event.

* , chapter=7

, title= Mr. Pratt's Patients , passage=“I don't know how you and the ‘head,’ as you call him, will get on, but I do know that if you call my duds a ‘livery’ again there'll be trouble . It's bad enough to go around togged out like a life saver on a drill day, but I can stand that 'cause I'm paid for it. What I won't stand is to have them togs called a livery. […]”}}

Efforts taken or expended, typically beyond the normal required.

* Bryant

She never took the trouble to close them.

*1881 , :

*:Indeed, by the report of our elders, this nervous preparation for old age is only trouble thrown away.

A malfunction.

Liability to punishment; conflict with authority.

(mining) A fault or interruption in a stratum.