βυθός

Etymology
Possibly a metathesis from, with cognates including 🇨🇬, 🇨🇬 (🇨🇬) and 🇨🇬 (from 🇨🇬). Unrelated to and.

Alternately, cognate to 🇨🇬.

Also compare the root with meaning related to swelling, as in a deepening.

However, Beekes rejects Indo-European origin, and assigns it to instead.

Noun

 * 1) depth
 * 2) depth of the sea, deep water

Etymology
Inherited from.

Noun

 * 1) seabed, riverbed, bottom, ground