bottom out

== English == === Pronunciation === === Verb === bottom out (third-person singular simple present bottoms out, present participle bottoming out, simple past and past participle bottomed out) (intransitive) To reach the bottom; to reach the nadir or lowest point. (idiomatic, automotive) Of a vehicle, to touch or drag along the ground or other surface. (idiomatic) Of a vessel, to touch the bottom of a water body. (mechanical engineering) Of a suspension or similar device, to strike the lower mechanical stop and lose the ability to buffer further downward motion. (intransitive, gay slang) To fully anally penetrate.