腰こしを落おち着つける

expression, ichidan verb

settle down; make oneself at home; stay for a while

Literally 'settle one's hips'; used when someone stays in a place for an extended period, often implying they get comfortable and are not in a hurry to leave.

• 彼かれはソファに腰こしを落おち着つけて、本ほんを読よみ始はじめた。

  He settled down on the sofa and started reading a book.

• 引ひっ越こし先さきでようやく腰こしを落おち着つけることができた。

  I was finally able to settle down in my new place.