nether

The nether part of something is the lowest part of it, the bottom. If you’re having, ahem, trouble in the toilet, you might want to go talk to the doc about your nether parts.

You might find the word nether in old books where "the nether world" could mean the world under the earth’s surface, like in Dante’s Inferno where he travels through hell, under the earth, before climbing up to paradise in the heavens. If you look closely you can hear the word nether in the word we normally use now: beneath.

Definitions of nether
1

adj lower

“gnawed his nether lip”
Synonyms:
bottom
situated at the bottom or lowest position

adj located below or beneath something else

nether garments”
Synonyms:
under
low
literal meanings; being at or having a relatively small elevation or upward extension

adj dwelling beneath the surface of the earth

nether regions”
Synonyms:
chthonian, chthonic
infernal
being of the underworld

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