Fetching details from the dictionary...

to sit (down); to have a seat; to be seated; to kneel (on the floor)
to assume (a position); to take on (a duty); to occupy (a post)
to hold steady; to hold still
ここに座ってもいい?
May I sit here?
彼は社長の椅子に座ることになった。
He ended up taking the president's seat.
長い間座っていて腰が痛い。
My back hurts from sitting for a long time.