平へい行こういとこ

noun

parallel cousins; ortho-cousins

Anthropological term for children of a parent's same-sex sibling (e.g., father's brother's children or mother's sister's children). Contrasts with 交叉いとこ (cross cousins).

• 父ちちの弟おとうとの子こ供どもは、私わたしにとって平へい行こういとこにあたる。

  My father's younger brother's children are my parallel cousins.

• 平へい行こういとこと交こう叉さいとこの区く別べつは、親しん族ぞく構こう造ぞうの研けん究きゅうで重じゅう要ようだ。

  The distinction between parallel cousins and cross cousins is important in the study of kinship structures.