<p><strong>Noun</strong></p><ul><li>the lowest or deepest part of anything, as distinguished from the top: the bottom of a hill; the bottom of a page; the tea leaves at the bottom of my cup</li><li>Synonyms: pedestal, foot, base</li><li>the under or lower side; underside</li><li>the ground under any body of water: The study sent a camera to the bottom of the sea</li><li>usually bottoms</li><li>Also called bottom land</li><li>Physical Geography: low alluvial land next to a river</li><li>Informal: the buttocks; rump</li><li>the seat of a chair: Don't sit in that one, the bottom is broken</li><li>the fundamental part; basic aspect</li><li>Synonyms: groundwork, foundation</li><li>the cause; origin; basis: Try getting to the bottom of the problem</li><li>Synonyms: wellspring, beginning, genesis, ground, root</li><li>lowest limit, especially of dignity, status, or rank: When people sink that low, they're bound to reach the bottom soon</li><li>bottoms, (used with a plural verb) the bottom part of a two-piece article of clothing, such as a bathing suit or a pair of pajamas</li><li>Baseball: the second half of an inning; the last three players in the batting order</li><li>Nautical: the part of a hull between the bilges, including the keel</li><li>the part of a hull that is immersed at all times</li><li>the cargo space in a vessel</li><li>the working part of a plow, comprising the plowshare, landside, and moldboard</li><li>Slang: (in the LGBTQ community) a person who prefers to take or is currently taking a receptive role in a particular sexual act, especially in anal intercourse</li><li>(especially in BDSM) a person who prefers to take or is currently taking a submissive role in a sexual relationship</li><li>usually bottoms</li><li>Chemistry: the heaviest, least volatile fraction of petroleum, left behind in distillation after more volatile fractions are driven off</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to furnish with an under or lowest side: The oven needed to be bottomed before it could be used</li><li>to base or found (usually followed by on or upon): A defense must be bottomed on reliable evidence</li><li>to discover the full meaning of (something); fathom</li><li>to bring (a submarine) to rest on the ocean floor: They had to bottom the sub until the enemy cruisers had passed by</li><li>(used without object) to be based; rest</li><li>to strike against the bottom or end; reach the bottom</li><li>(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</li><li>Slang: (in the LGBTQ community) to take a receptive role in a particular sexual act, especially in anal intercourse</li><li>(especially in BDSM) to take a submissive role in a sexual relationship or encounter</li></ul><p><strong>Adjective</strong></p><ul><li>of or relating to the bottom or a bottom</li><li>located on or at the lowest part or side: I want the bottom book in the stack</li><li>lowest: They sold off the last of the stock at bottom prices</li><li>living near or on the bottom: A flounder is a bottom fish</li><li>fundamental: The bottom cause of the issue is a lack of funding</li></ul><p><strong>Verb Phrase</strong></p><ul><li>to reach the lowest state or level: The declining securities market finally bottomed out and began to rise</li></ul>