Webster's Revised Unabridged Dictionary · 1913

-one

-one (ōn)

[From Greek -w`nh, signifying, female descendant.]

(Chemistry) A suffix indicating that the substance, in the name of which it appears, is a ketone; as, acetone.

-one , suffix

(Chemistry) A termination indicating that the hydrocarbon to the name of which it is affixed belongs to the fourth series of hydrocarbons, or the third series of unsaturated hydrocarbons; as, nonone. [archaic]

One (wun) , adjective

[Old English one, on, an, Anglo-Saxon ān; akin to Dutch een, Old Saxon ēn, OFries. ēn, ān, German ein, Danish een, Swedish en, Icelandic einn, Gothic ains, Welsh un, Ir. & Gael. aon, Latin unus, earlier oinos, oenos, Greek o'i`nh the ace on dice; compare Sanskrit ēka. The same word as the indefinite article a, an. r 299. Compare 2d A, 1st An, Alone, Anon, Any, None, Nonce, Only, Onion, Unit.]

1.
Being a single unit, or entire being or thing, and no more; not multifold; single; individual.
The dream of Pharaoh is one. — Gen. xli. 25
O that we now had here But one ten thousand of those men in England. — Shakespeare
2.
Denoting a person or thing conceived or spoken of indefinitely; a certain. “I am the sister of one Claudio” [Shak.], that is, of a certain man named Claudio.
3.
Pointing out a contrast, or denoting a particular thing or person different from some other specified; -- used as a correlative adjective, with or without the.
From the one side of heaven unto the other. — Deut. iv. 32
4.
Closely bound together; undivided; united; constituting a whole.
The church is therefore one, though the members may be many. — Bp. Pearson
5.
Single in kind; the same; a common.
One plague was on you all, and on your lords. — 1 Sam. vi. 4
6.
Single; unmarried. [Obsolete]
Men may counsel a woman to be one. — Chaucer
One day when Phoebe fair, With all her band, was following the chase. — Spenser
Well, I will marry one day. — Shakespeare

One is often used in forming compound words, the meaning of which is obvious; as, one-armed, one-celled, one-eyed, one-handed, one-hearted, one-horned, one-idead, one-leaved, one-masted, one-ribbed, one-story, one-syllable, one-stringed, one-winged, etc.

One , noun

1.
A single unit; as, one is the base of all numbers.
2.
A symbol representing a unit, as 1, or i.
3.
A single person or thing.
The shining ones. — Bunyan
Hence, with your little ones. — Shakespeare
He will hate the one, and love the other. — Matt. vi. 24
That we may sit, one on thy right hand, and the other on thy left hand, in thy glory. — Mark x. 37
Collocations (7)
After one , after one fashion; alike. [Obsolete] — Chaucer
At one , in agreement or concord. See At one, in the Vocab.
Ever in one , continually; perpetually; always. [Obsolete] — Chaucer
In one , in union; in a single whole.
One and one or One by one , singly; one at a time; one after another. Raising one by one the suppliant crew. — Dryden
one on one , contesting an opponent individually; -- in a contest.
go one on one , to contest one opponent by oneself; -- in a game, esp. basketball.

One (wun) , indef. pron.

Any person, indefinitely; a person or body; as, what one would have well done, one should do one's self.
It was well worth one's while. — Hawthorne
Against this sort of condemnation one must steel one's self as one best can. — G. Eliot
When any one heareth the word. — Matt. xiii. 19
She knew every one who was any one in the land of Bohemia. — Compton Reade
The Peloponnesians and the Athenians fought against one another. — Jowett (Thucyd. )
The gentry received one another. — Thackeray

One , transitive verb

To cause to become one; to gather into a single whole; to unite; to assimilate. [Obsolete]
The rich folk that embraced and oned all their heart to treasure of the world. — Chaucer