The underside: scraped the bottom of the car on a rock.
The supporting part; the base.
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.
The basic underlying quality; the source: Let's get to the bottom of the problem.
The solid surface under a body of water.
Low-lying alluvial land adjacent to a river. Often used in the plural. Also called bottomland.
Nautical The part of a ship's hull below the water line.
A ship; a boat: "English merchants did much of their overseas trade in foreign bottoms” ( G.M. Trevelyan).
The trousers or short pants of pajamas. Often used in the plural.
Informal The buttocks.
The seat of a chair.
Baseball The second or last half of an inning.
Staying power; stamina. Used of a horse.
To provide with an underside.
To provide with a foundation.
To get to the bottom of; fathom.
To be or become based or grounded.
To rest on or touch the bottom.
bottom out To descend to the lowest point possible, after which only a rise may occur: Sales of personal computers have bottomed out.
at bottom Basically.