оухо

Etymology
From, from or possibly , from.

Noun

 * 1) ear
 * 2) eye of a needle
 * 3) hearing

Declension
The singular takes o-stem endings, the dual takes mostly i-stem endings, and the plural takes s-stem endings. Nonetheless оухо is conventionally considered an s-stem. Halla-aho considers the dual forms a remnant of an original i-stem which later became an s-stem, but Derksen reconstructs the Proto-Slavic form as an o-stem instead.

Reconstructed:

Attested:

†Only attested in later Church Slavonic.