1. (conj.)but on the contrary: My brother went, but I did not.
2. but and yet; nevertheless: strange but true.
3. but except; save: did nothing but complain.
4. but without the circumstance that: It never rains but it pours.
5. but otherwise than: There is no hope but by prayer.
6. but that (used esp. after doubt, deny, etc., with a negative): I don't doubt but you'll do it.
7. but that &ellipsis; not: No leaders ever existed but they were optimists.
8. but (used to introduce an exclamatory expression): But that's wonderful!
9. but Informal. than: It no sooner started raining but it stopped.
10. (prep.)but with the exception of: No one replied but me.
11. but other than: nothing but trouble.
12. (adv.)but only; just: There is but one answer.
13. (n.)but buts, reservations or objections: You'll do as you're told, no buts about it.
Definition of 'BUT'
Princeton's WordNet
1. (adverb)merely, simply, just, only, but and nothingmore "I was merely asking"; "it is simply a matter of time"; "just a scratch"; "he was only a child"; "hopes that last but a moment"
1. (conjunction)but indicates sth opposite to or different from a thing already mentioned The sun was warm, but the water was freezing.; I was going to buy it, but it was too expensive.
2. but used to make a request more polite Excuse me, but could we take this chair?; I'm sorry, but I need to leave now.
3. but emphasizes surprise or anger "They got in through the door." "But how?"
4. (preposition)but except for He's eaten nothing but candy all day.
Definition of 'BUT'
Webster Dictionary
1. (noun)BUT a limit; a boundary
2. (noun)BUT the end; esp. the larger or thicker end, or the blunt, in distinction from the sharp, end. See 1st Butt
5. BUT excepting or excluding the fact that; save that; were it not that; unless; -- elliptical, for but that
6. BUT otherwise than that; that not; -- commonly, after a negative, with that
7. BUT only; solely; merely
8. BUT 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
9. BUT the outer apartment or kitchen of a two-roomed house; -- opposed to ben, the inner room
10. (verb)BUT see Butt, v., and Abut, v
11. (verb)BUT a limit; a bound; a goal; the extreme bound; the end
12. (verb)BUT the thicker end of anything. See But
22. (verb)BUT a kind of hinge used in hanging doors, etc.; -- so named because fastened on the edge of the door, which butts against the casing, instead of on its face, like the strap hinge; also called butt hinge
23. (verb)BUT the thickest and stoutest part of tanned oxhides, used for soles of boots, harness, trunks
24. (verb)BUT the hut or shelter of the person who attends to the targets in rifle practice
Definitions of BUT 
Afrikaans: maar, egter
Arabic: لكن
Bulgarian: но
Brazilian: mas
Czech: ale
German: aber
Danish: men
Greek: αλλά
Spanish: pero
Estonian: aga
Farsi: اما؛ ولی
Finnish: mutta
French: mais
Hebrew: אָבַל
Hindi: लेकिन
Croatian: ali
Hungarian: de
Indonesian: tetapi
Icelandic: en
Italian: ma, però
Japanese: しかし
Korean: 그러나
Lithuanian: bet
Latvian: bet
Malay: tetapi
Dutch: maar
Norwegian: men, derimot
Polish: ale
Persian: اما؛ ولی
Pashto: مګر، ولی
Portuguese: mas
Romanian: dar
Russian: но, а, однако
Slovak: ale
Slovenian: toda
Serbian: ali
Swedish: men
Thai: แต่
Turkish: fakat, ama, ancak
Taiwanese: 但是
Ukrainian: але, однак
Urdu: لیکن
Vietnamese: nhưng mà
Chinese: 但是
