Having lower parts made of or covered by copper (especially of a ship or cookware). / (Britain, idiomatic) Thoroughly reliable; secure

(idiomatic, often used attributively) The worst or lowest quality on the market, especially among a range of products.

Having a flat bottom.

The lowest gearing available from a gearbox, typically in a motor vehicle or cycle.

plural of bottom feeder

A style of pants in which the end of each pantleg flares out dramatically from the knee downward, like the mouth of a bell.

Of or pertaining to a style of pants in which the end of each pantleg flares out dramatically from the knee downward, like the mouth of a bell.

plural of bottom gear

Alternative spelling of rock bottom

(intransitive, figuratively) To fall to the lowest possible level.