Meaning of 正座坐 in Japanese

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Definition of 正座坐

すわる(suwaru) 【座る ·坐る ·据わる ·据る】

(v5r, vi) to sit; to squat
数人の学生がベンチに座り、昼食を食べていた。
Some students were sitting on the bench and having lunch.
to assume (a position)
to hold steady; to hold still

しょうざ(shouza) 【正座】

(n) seat of honor; seat of honour
ずっと正座してたからか、足がしびれちゃって。
I've sat on my heels for so long my legs have fallen asleep.

せいざ(seiza) 【正座 ·正坐】

(n, vs) kneeling with the tops of the feet flat on the floor, and sitting on the soles