Also found in: Thesaurus, Medical, Financial, Acronyms, Idioms, Encyclopedia, Wikipedia. The part closest to a reference point: was positioned at the bottom round steak sous vide of the key for a rebound. The underside: scraped the bottom of the car on a rock.

The far end or part: at the bottom of the bed. The last place, as on a list. The lowest or least favorable position: started at the bottom of the corporate hierarchy. Let’s get to the bottom of the problem.