Mouth

отве́рстие

otvérstije

(an outlet, aperture or orifice)

пасть

pastʹ

(the opening of a creature through which food is ingested — see also lip, face)

рот

rot

(the opening of a creature through which food is ingested — see also lip, face)

у́стье

ústʹje

(the end of a river out of which water flows)

у́стье

ústʹje

(an outlet, aperture or orifice)

уста́

ustá

(the opening of a creature through which food is ingested — see also lip, face)