the material world, esp. as surrounding humankind and existing independently of human activities.
2.
the natural world as it exists without human beings or civilization.
3.
the elements of the natural world, as mountains, trees, animals, or rivers.
4.
natural scenery.
5.
the universe, with all its phenomena.
6.
the sum total of the forces at work throughout the universe.
7.
reality, as distinguished from any effect of art: a portrait true to nature.
8.
the particular combination of qualities belonging to a person, animal, thing, or class by birth, origin, or constitution; native or inherent character: human nature.
9.
the instincts or inherent tendencies directing conduct: a man of good nature.
10.
character, kind, or sort: two books of the same nature.
11.
characteristic disposition; temperament: a self-willed nature; an evil nature.
12.
the original, natural, uncivilized condition of humankind.
13.
the biological functions or the urges to satisfy their requirements.
14.
a primitive, wild condition; an uncultivated state.
15.
a simple, uncluttered mode of life without the conveniences or distractions of civilization: a return to nature.
16.
(initial capital letter,italics) a prose work (1836), by Ralph Waldo Emerson, expounding transcendentalism.
17.
Theology. the moral state as unaffected by grace.
—Idioms
18.
by nature, as a result of inborn or inherent qualities; innately: She is by nature a kindhearted person.
19.
in a state of nature,
a.
in an uncivilized or uncultured condition.
b.
without clothes; nude; naked.
20.
of or in the nature of, having the character or qualities of: in the nature of an apology.
Origin: 1200–50; ME natur(e) < OF < L nātūra conditions of birth, quality, character, natural order, world, equiv. to nāt(us) (ptp. of nāscī to be born) + -ūra-ure
The forces and processes that produce and control all the phenomena of the material world: the laws of nature.
The world of living things and the outdoors: the beauties of nature.
A primitive state of existence, untouched and uninfluenced by civilization or artificiality: couldn't tolerate city life anymore and went back to nature.
Theology Humankind's natural state as distinguished from the state of grace.
A kind or sort: confidences of a personal nature.
The essential characteristics and qualities of a person or thing: "She was only strong and sweet and in her nature when she was really deep in trouble"(Gertrude Stein).
The fundamental character or disposition of a person; temperament: "Strange natures made a brotherhood of ill"(Percy Bysshe Shelley).
The natural or real aspect of a person, place, or thing. See Synonyms at disposition.
The processes and functions of the body.
[Middle English, essential properties of a thing, from Old French, from Latin nātūra, from nātus, past participle of nāscī, to be born; see genə- in Indo-European roots.]
[ney-cher] 
) a prose work (1836), by Ralph Waldo Emerson, expounding transcendentalism.