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 at rock bottom
Idioms used to say that you are certain that something will happen You can bet your bottom dollar that he'll be late. See bottom in the Oxford Advanced Learner's Dictionary