põhjas
Põhjas is the inessive form of the Estonian noun põhi, meaning bottom, base, or origin. It functions as a locative, expressing “in the bottom” or “at the bottom” of something. The suffix -s marks the inessive case after the stem põhi, and it is used with different nouns to indicate the location of objects or phenomena in the lower part of a container, a body of water, or a structure.
In usage, põhjas appears in contexts such as bodies of water, containers, and the lower parts of
Etymology and related forms: põhi means base or bottom, and the inessive suffix -s creates põhjas. This
See also: Estonian grammar, inessive case, bottom as a semantic concept in Finnic languages. Note that põhjas