(a) A gateway; a gate of a city, castle, house, etc.; also, a doorway; flod gate, a floodgate; (b) the movable barrier which closes off a gateway; one of the valves of a double gate; ?a portcullis……

(a) To make (sb.) sit, seat (sb.); also, with partitive construction: setten of..over heigh setle, fig. seat (someone's offspring) upon (his) high throne, make to rule; setten adoun (doun, up), make……