American English

Definition of bottom adjective from the Oxford Advanced American Dictionary

  

bottom

 adjective
adjective
NAmE//ˈbɑt̮əm//
 
[only before noun]
 
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  •  in the lowest, last, or furthest place or position the bottom line (on a page) your bottom lip the bottom step (of a flight of stairs) on the bottom shelf Put your clothes in the bottom drawer. in the bottom right-hand corner of the page the bottom end of the price range We came in at the bottom (= got the worst result) with 12 points. see also rock bottom
  • Idioms
    you can bet your life/your bottom dollar (on something/(that)…) (informal)
     
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    used to say that you are certain that something will happen You can bet your bottom dollar that he'll be late.
    See the Oxford Advanced Learner's Dictionary entry: bottom