(chemistry) A bottle fitted with glass tubes passing through the cork, so that on blowing into one of the tubes a stream of water issuing from the other may be directed upon anything to be washed or rinsed, as a precipitate upon a filter, etc.

A glass laboratory apparatus for measuring the amount of dissolved oxygen in water.

Alternative spelling of flat-bottomed

(idiomatic) Really, basically, fundamentally.

(figuratively) The position of a person or thing of low quality or poor character.

(idiomatic) To be bisexual.

Third-person singular simple present indicative form of bottom fall out

A piece of graffiti covering the whole height of a railway carriage.

(idiomatic) To profit from two things at the same time, especially when those things seem contradictory or incompatible.

(BDSM) To make demands while supposedly in a submissive role.