nutClockwise from top: T-nut, hex cap nut, wingnut, and hex nutnut (n?t)n.1. a. An indehiscent fruit having a single seed enclosed in a hard shell, such as an acorn or hazelnut.b. The usually edible seed of such a fruit.c. Any of various other usually edible seeds enclosed in a hard covering such as a seed coat or the stone of a drupe, as in a pine nut, peanut, almond, or walnut.2. Slang a. A crazy or eccentric person.b. An enthusiast; a buff: a movie nut.3. Informal A difficult endeavor or problem: Painting the closet was a tough nut to crack.4. Slang The human head.5. Music a. A ridge of wood at the top of the fingerboard or neck of a stringed instrument, over which the strings pass.b. A device at the lower end of the bow for a stringed instrument, used for tightening the hairs.6. A small block of metal or wood with a central, threaded hole that is designed to fit around and secure a bolt or screw.7. Slang a. The cost of launching a business venture.b. The operating expenses of a theater, theatrical production, or similar enterprise: “The [theater] has simply failed to attract enough paying customers per week to meet its nut” (Variety).8. Vulgar Slang A testicle.intr.v. nut·ted, nut·ting, nuts 1. To gather or hunt for nuts.2. Vulgar Slang To ejaculate.[Middle English nute, from Old English hnutu.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.nut (n?t) n1. (Botany) a dry one-seeded indehiscent fruit that usually possesses a woody wall2. (not in technical use) any similar fruit, such as the walnut, having a hard shell and an edible kernel3. (Botany) the edible kernel of such a fruit4. slang a. an eccentric personb. a person who is mentally disturbed5. a slang word for head16. do one’s nut slang Brit to be extremely angry; go into a rage7. off one’s nut slang mad, crazy, or foolish8. a person or thing that presents difficulties (esp in the phrase a tough or hard nut to crack)9. (Mechanical Engineering) a small square or hexagonal block, usually metal, with a threaded hole through the middle for screwing on the end of a bolt10. (Mountaineering) mountaineering a variously shaped small metal block, usually a wedge or hexagonal prism (originally an ordinary engineer’s nut) with a wire or rope loop attached, for jamming into a crack to provide security. Also called: chock 11. (Instruments) music a. the ledge or ridge at the upper end of the fingerboard of a violin, cello, etc, over which the strings pass to the tuning pegsb. the end of a violin bow that is held by the player12. (Printing, Lithography & Bookbinding) printing another word for en13. (Cookery) a small usually gingery biscuit14. Brit a small piece of coalvb, nuts, nutting or nutted15. (intr) to gather nuts16. (tr) slang to butt (someone) with the head[Old English hnutu; related to Old Norse hnot, Old High German hnuz (German Nuss)] ?nut?like adjNUT (in Britain) abbreviation for (Education) National Union of TeachersCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014nut (n?t) n., v. nut?ted, nut?ting. n. 1. a dry fruit consisting of an edible kernel or meat enclosed in a woody or leathery shell. 2. the kernel itself. 3. a hard, indehiscent, one-seeded fruit, as the chestnut or the acorn. 4. 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. Slang. a devotee or zealot. 6. Slang. a. a foolish, silly, or eccentric person. b. an insane person. 7. Often, nuts.Slang: Usu. Vulgar. the testicles. 8. a. the operating expenses of a commercial enterprise, usu. figured weekly; break-even point. b. the total cost of financing a venture. 9. (in an instrument of the violin family) a ledge at the upper end of the fingerboard over which the strings pass. v.i. 10. to seek for or gather nuts. Idioms: a hard or tough nut to crack, a. a difficult problem. b. a person difficult to understand or convince. [before 900; Middle English nute, Old English hnutu; c. Middle Dutch note, neute (Dutch noot), Old High German (h)nuz (German Nuss), Old Norse hnot] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.nutPast participle: nuttedGerund: nuttingImperativePresentPreteritePresent ContinuousPresent PerfectPast ContinuousPast PerfectFutureFuture PerfectFuture ContinuousPresent Perfect ContinuousFuture Perfect ContinuousPast Perfect ContinuousConditionalPast ConditionalImperativenutnutPresentI nutyou nuthe/she/it nutswe nutyou nutthey nutPreteriteI nuttedyou nuttedhe/she/it nuttedwe nuttedyou nuttedthey nuttedPresent ContinuousI am nuttingyou are nuttinghe/she/it is nuttingwe are nuttingyou are nuttingthey are nuttingPresent PerfectI have nuttedyou have nuttedhe/she/it has nuttedwe have nuttedyou have nuttedthey have nuttedPast ContinuousI was nuttingyou were nuttinghe/she/it was nuttingwe were nuttingyou were nuttingthey were nuttingPast PerfectI had nuttedyou had nuttedhe/she/it had nuttedwe had nuttedyou had nuttedthey had nuttedFutureI will nutyou will nuthe/she/it will nutwe will nutyou will nutthey will nutFuture PerfectI will have nuttedyou will have nuttedhe/she/it will have nuttedwe will have nuttedyou will have nuttedthey will have nuttedFuture ContinuousI will be nuttingyou will be nuttinghe/she/it will be nuttingwe will be nuttingyou will be nuttingthey will be nuttingPresent Perfect ContinuousI have been nuttingyou have been nuttinghe/she/it has been nuttingwe have been nuttingyou have been nuttingthey have been nuttingFuture Perfect ContinuousI will have been nuttingyou will have been nuttinghe/she/it will have been nuttingwe will have been nuttingyou will have been nuttingthey will have been nuttingPast Perfect ContinuousI had been nuttingyou had been nuttinghe/she/it had been nuttingwe had been nuttingyou had been nuttingthey had been nuttingConditionalI would nutyou would nuthe/she/it would nutwe would nutyou would nutthey would nutPast ConditionalI would have nuttedyou would have nuttedhe/she/it would have nuttedwe would have nuttedyou would have nuttedthey would have nuttedCollins English Verb Tables © HarperCollins Publishers 2011