the blue whale

Lowest, closest to the bottom.

plural of bottom gear

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

Alternative spelling of rock bottom

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

(of a fish or other aquatic creature) Feeding off plant and animal life found in the lowest regions of its habitat.

A fish or other aquatic creature that feeds off the bottom of its habitat; a flatfish.

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.