Webster's Revised Unabridged Dictionary · 1913

But

But (but) , preposition

[Old English bute, buten, Anglo-Saxon būtan, without, on the outside, except, besides; pref. be- + ūtan outward, without, from ūt out. Primarily, būtan, as well as ūt, is an adverb. r198. See By, Out; compare About.]

1.
Except with; unless with; without. [Obsolete]
So insolent that he could not go but either spurning equals or trampling on his inferiors. — Fuller
Touch not the cat but a glove. — Motto of the Mackintoshes
2.
Except; besides; save.
Who can it be, ye gods! but perjured Lycon? — E. Smith

In this sense, but is often used with other particles; as, but for, without, had it not been for. “Uncreated but for love divine.” Young.

3.
Excepting or excluding the fact that; save that; were it not that; unless; -- elliptical, for but that.
And but my noble Moor is true of mind... it were enough to put him to ill thinking. — Shakespeare
4.
Otherwise than that; that not; -- commonly, after a negative, with that.
It cannot be but nature hath some director, of infinite power, to guide her in all her ways. — Hooker
There is no question but the king of Spain will reform most of the abuses. — Addison
5.
Only; solely; merely.
Observe but how their own principles combat one another. — Milton
If they kill us, we shall but die. — 2 Kings vii. 4
A formidable man but to his friends. — Dryden
6.
On the contrary; on the other hand; only; yet; still; however; nevertheless; more; further; -- as connective of sentences or clauses of a sentence, in a sense more or less exceptive or adversative; as, the House of Representatives passed the bill, but the Senate dissented; our wants are many, but quite of another kind.
Now abideth faith hope, charity, these three; but the greatest of these is charity. — 1 Cor. xiii. 13
When pride cometh, then cometh shame; but with the lowly is wisdom. — Bible (KJV) - Proverb xi. 2
But and if that servant say in his heart, My lord delayeth his coming;... the lord of that servant will come in a day when he looketh not for him. — Luke xii. 45, 46
But this I read, that but if remedy Thou her afford, full shortly I her dead shall see. — Spenser
Collocations (2)
All but , See under All.
But and if , but if; an attempt on the part of King James's translators of the Bible to express the conjunctive and adversative force of the Greek {not transcribed}.

“The chief error with but is to use it where and is enough; an error springing from the tendency to use strong words without sufficient occasion.”

But ({not transcribed}) , noun

[Compare But, prep., adv. & conj.]

The outer apartment or kitchen of a two-roomed house; -- opposed to ben, the inner room. [Scottish]

But , noun

[See 1st But.]

1.
A limit; a boundary.
2.
The end; esp. the larger or thicker end, or the blunt, in distinction from the sharp, end. Now disused in this sense, being replaced by butt{2}. See 1st Butt.
Collocations (1)
But end , the larger or thicker end; as, the but end of a log; the but end of a musket. See Butt, n.

But , intransitive verb

See Butt, v., and Abut, v.