1. (n.)nut a dry fruit consisting of an edible kernel or meat enclosed in a woody or leathery shell.
2. nut the kernel itself.
3. nut a hard, indehiscent, one-seeded fruit, as the chestnut or the acorn.
4. nut a block, usu. of metal, perforated with a threaded hole so that it can be screwed down on a bolt to hold together objects through which the bolt passes.
5. nut Slang.
6. nut a devotee or zealot.
7. nut Slang.
8. nut a foolish, silly, or eccentric person.
9. nut an insane person.
10. nut Often, nuts.Slang: Usu. Vulgar. the testicles.
11. nut the operating expenses of a commercial enterprise, usu. figured weekly; break-even point.
12. nut the total cost of financing a venture.
13. nut (in an instrument of the violin family) a ledge at the upper end of the fingerboard over which the strings pass.
14. (v.i.)nut to seek for or gather nuts.
15. nut a difficult problem.
16. nut a person difficult to understand or convince.
Etymology: (bef. 900; ME nute, OE hnutu; c. MD
Definition of 'nut'
Princeton's WordNet
1. (noun)nut usually large hard-shelled seed
2. (noun)Nut Egyptian goddess of the sky
3. (noun)nut a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt
4. (noun)en, nut half the width of an em
5. (noun)crackpot, crank, nut, nut case, fruitcake, screwball a whimsically eccentric person
6. (noun)addict, nut, freak, junkie, junky someone who is so ardently devoted to something that it resembles an addiction "a golf addict"; "a car nut"; "a bodybuilding freak"; "a news junkie"
7. (verb)testis, testicle, orchis, ball, ballock, bollock, nut, egg one of the two male reproductive glands that produce spermatozoa and secrete androgens "she kicked him in the balls and got away"
1. (noun)nut the hard fruit of some trees with an outer shell that you remove before eating almonds, pecans, walnuts and other nuts; to crack a nut
2. nut a circular piece of metal that holds a bolt in place Screw the nut onto the bolt.
3. nut a person you think is slightly crazy Some nut backed his car into us.
4. nut a health/electronics/computer etc. nut sb who is very enthusiastic about health, electronics, etc.
5. nut a tough/hard nut to crack sb or sth that is difficult to understand or deal with Golfers know the course is a tough nut to crack.
6. nut the nuts and bolts the most basic aspects the nuts and bolts of writing reports
Definition of 'nut'
Webster Dictionary
1. (noun)nut the fruit of certain trees and shrubs (as of the almond, walnut, hickory, beech, filbert, etc.), consisting of a hard and indehiscent shell inclosing a kernel
2. (noun)nut a perforated block (usually a small piece of metal), provided with an internal or female screw thread, used on a bolt, or screw, for tightening or holding something, or for transmitting motion. See Illust. of lst Bolt
3. (noun)nut the tumbler of a gunlock
4. (noun)nut a projection on each side of the shank of an anchor, to secure the stock in place
Definitions of nut 
Afrikaans: neut
Arabic: مُكَسَّرات: جَوز، لَوز، ب
Bulgarian: ядка
Brazilian: noz
Czech: ořech
German: die Nuß
Danish: nød; -nød
Greek: καρπός με σκληρό περίβλημ
Spanish: fruto seco
Estonian: pähkel
Farsi: گردو
Finnish: pähkinä
French: fruità écale
Hebrew: אֶגוֹז
Hindi: सुपारी
Croatian: orah, lješnjak
Hungarian: dió
Indonesian: biji-bijian
Icelandic: hneta
Italian: noce, nocciola, nocciolin
Japanese: 木の実
Korean: 견과(堅果)
Lithuanian: riešutas
Latvian: rieksts
Malay: kacang
Dutch: noot
Norwegian: nøtt
Polish: orzech
Persian: ،چهارمغز گردو
Pashto: چهارمغز
Portuguese: noz
Romanian: nucă; alună
Russian: орех
Slovak: orech, oriešok
Slovenian: oreh
Serbian: orah
Swedish: nöt
Thai: ผลไม้แห้งเปลือกแข็ง
Turkish: sert kabuklu meyve
Taiwanese: 堅果
Ukrainian: горіх
Urdu: سخت چھلکے کا گري دار ميوہ
Vietnamese: quả hạch
Chinese: 坚果
