みこしを据すえる

expression, ichidan verb

ensconce oneself; settle down comfortably; plant oneself

Idiomatic expression literally meaning 'to set down one's portable shrine', used humorously or emphatically when someone plops down and refuses to move, often in a chair or seat.

• 彼かれはソファにみこしを据すえて、動うごこうとしなかった。

  He ensconced himself on the sofa and wouldn't budge.

• 会かい議ぎ室しつの一いち番ばんいい席せきにみこしを据すえて、ずっと居い座すわっていた。

  He planted himself in the best seat in the meeting room and stayed there the whole time.