the.com/bottom

The part of you that commits to gravity so the rest of you doesn't have to.

means The lowest part of something, or informally, the buttocks — the base that everything else rests on.

from From Old English 'botm,' meaning the base or foundation of something, tracing back to a very old Germanic root shared with words for ground and depth. The same ancient root is a distant cousin of the Latin-derived 'fundus' (bottom, base), which gives English 'fundamental' and 'foundation' — different branches of language, same instinct to name the thing underneath everything else.

nautical origin
ship's hull was its original bottom
kink usage
emerged in BDSM vocabulary by the 1960s
bottom line
accounting term for net profit, final row
rock bottom
idiom means lowest possible point, 1920s slang
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