Buttock
ENEnglish – Buttock
The buttock is the part at the back of the body between the legs and the back. When a person sits down, she or he sits on her or his buttocks.
RUРусский – Зад
Зад / ягодицы — задняя часть тела между ногами и спиной. Когда человек сидит, он сидит на ягодицах.