bottom

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 /ˈbɒtəm/



WordReference Random House Learner's Dictionary of American English © 2016
bot•tom /ˈbɑtəm/USA pronunciation   n. 
    [countable;
    usually: the + ~]
  1. the lowest or deepest part of anything:the bottom of a page.
  2. the under or lower side; underside: the bottom of a keyboard.
  3. the ground under a body of water[singular;
    the + ~]
    found the gangster's body at the bottom of the river.
  4. the end farthest from an entrance;
    the far end:the house at the bottom of the road.
  5. Furniturethe seat of a chair:a piece of gum on the bottom of the chair.
  6. Informal TermsInformal. the buttocks; rump.
  7. Clothing bottoms, [plural;
    used with a plural verb]
    the trousers or pants of a pair of pajamas:The pajama bottoms have a drawstring around the waist.
  8. Sportthe second half of an inning in baseball:the bottom of the sixth.
  9. the lowest level of dignity or status:The workers at the bottom do all the work.

v. 
  1. bottom out, [no object] to reach the lowest state or level:The sagging economy has finally bottomed out.

adj. [before a noun]
  1. of or relating to the bottom; on or at the bottom: the bottom floor.
  2. lowest:the bottom button on a shirt.
idiom
  1. Idiomsat bottom, in reality;
    basically:a nice guy at bottom.
  2. Idiomsat the bottom of, really causing; responsible for:Who is at the bottom of all these leaks to the media?
  3. bet one's bottom dollar: 
      • to bet the last of one's money or resources.
      • to be positive or assured:You can bet your bottom dollar I'll be on time to receive the money!
  4. Idiomsbottoms up. This expression is used before swallowing a drink:"Bottoms up,'' he said and downed his drink.
  5. from the bottom of one's heart, very sincerely:I want to thank you from the bottom of my heart.
  6. get to the bottom of, [+ object] to determine the cause of:wanted to get to the bottom of this mystery.


WordReference Random House Unabridged Dictionary of American English © 2016
bot•tom  (botəm), 
n. 
  1. the lowest or deepest part of anything, as distinguished from the top:the bottom of a hill; the bottom of a page.
  2. the under or lower side;
    underside:the bottom of a typewriter.
  3. the ground under any body of water:the bottom of the sea.
  4. Usually,bottoms. Also called bottom land. [Phys. Geog.]low alluvial land next to a river.
  5. [Naut.]
      • the part of a hull between the bilges, including the keel.
      • the part of a hull that is immersed at all times.
      • the cargo space in a vessel.
      • a cargo vessel.
  6. the seat of a chair.
  7. [Informal.]the buttocks; rump.
  8. the fundamental part;
    basic aspect.
  9. bottoms, (used with a pl. v.) the trousers of a pair of pajamas.
  10. the working part of a plow, comprising the plowshare, landside, and moldboard.
  11. the cause;
    origin;
    basis:Try getting to the bottom of the problem.
  12. [Baseball.]
      • the second half of an inning.
      • the last three players in the batting order.
  13. lowest limit, esp. of dignity, status, or rank:When people sink that low, they're bound to reach the bottom soon.
  14. ChemistryUsually,bottoms. [Chem.]the heaviest, least volatile fraction of petroleum, left behind in distillation after more volatile fractions are driven off.
  15. at bottom, in reality; fundamentally:They knew at bottom that they were only deceiving themselves.Also,at the bottom. 
  16. bottoms up, (used interjectionally to urge the downing of one's drink).

v.t. 
  1. to furnish with a bottom.
  2. to base or found (usually fol. by on or upon).
  3. to discover the full meaning of (something);
    fathom.
  4. to bring (a submarine) to rest on the ocean floor:They had to bottom the sub until the enemy cruisers had passed by.

v.i. 
  1. to be based; rest.
  2. to strike against the bottom or end;
    reach the bottom.
  3. Automotive(of an automotive vehicle) to sink vertically, as when bouncing after passing over a bump, so that the suspension reaches the lower limit of its motion:The car bottomed too easily on the bumpy road.
  4. bottom out, to reach the lowest state or level:The declining securities market finally bottomed out and began to rise.

adj. 
  1. of or pertaining to the bottom or a bottom.
  2. located on or at the bottom:I want the bottom book in the stack.
  3. lowest:bottom prices.
  4. Hunting and Fishingliving near or on the bottom:A flounder is a bottom fish.
  5. fundamental:the bottom cause.
bet one's bottom dollar: 
    • to wager the last of one's money or resources.
    • to be positive or assured:You can bet your bottom dollar that something will prevent us from leaving on time.
Etymology:bef. 1000;
Middle English botme, Old English botm;
akin to Old Norse botn, Dutch bodem, German Boden, Latin fundus, Greek pythmé̄n, Sanskrit budhná
1 . base, foot. 8, 11 . foundation, groundwork.

Collins Concise English Dictionary © HarperCollins Publishers::

bottom /ˈbɒtəm/ n
  1. the lowest, deepest, or farthest removed part of a thing: the bottom of a hill
  2. the least important or successful position: the bottom of a class
  3. the ground underneath a sea, lake, or river
  4. the inner depths of a person's true feelings (esp in the phrase from the bottom of one's heart)
  5. the underneath part of a thing
  6. the parts of a vessel's hull that are under water
  7. (in literary or commercial contexts) a boat or ship
  8. (often plural) US Canadian the low land bordering a river
  9. (esp of horses) staying power; stamina
  10. importance, seriousness, or influence: his views all have weight and bottom
  11. informal the buttocks
  12. at bottomin reality; basically or despite appearances to the contrary
  13. be at the bottom ofto be the ultimate cause of
  14. get to the bottom ofto discover the real truth about
adj (prenominal)
  1. lowest or last
  2. bet one's bottom dollar on, put one's bottom dollar onto be absolutely sure of (one's opinion, a person, project, etc)
  3. of, relating to, or situated at the bottom or a bottom: the bottom shelf
  4. fundamental; basic
vb
  1. (transitive) to provide (a chair, etc) with a bottom or seat
  2. (transitive) to discover the full facts or truth of; fathom
  3. usually followed by on or upon: to base or be founded (on an idea, etc)
Etymology: Old English botm; related to Old Norse botn, Old High German bodam, Latin fundus, Greek puthmēn



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