the.com/anus

The body's most honest exit — no spin, no small talk, just results.

means The opening at the end of the digestive tract through which solid waste leaves the body.

from Straight from Latin 'anus,' meaning 'ring' or 'circle' — a plainly descriptive term the Romans used for this and other ring-shaped things, with no euphemism attached. English borrowed it directly, intact, sometime in the medical vocabulary of the later medieval or early modern period, where it has sat ever since as the clinical term of choice.

etymology
latin for ring, which is weirdly polite
muscle count
two sphincters, one voluntary, one not
evolutionary milestone
older than mouths in some ancestors
nerve density
richly innervated, hence the strong opinions
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