"Okuribi" is one of the events observed in Bon festivals to usher out from this mortal world to the other world those spirits of the dead that had once returned to their old homes during the Bon period.
送り火（おくりび）とは、お盆の行事の一つで、お盆に帰ってきた死者の魂を現世からふたたびあの世へと送り出す行事である。