(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) Large in size or quantity, big; gret and smal, large and small, all; gret ne smal, big or little, of no kind; althergrettest, largest of all [cp. alder- pref.]; gret belle, large bell; (b) much……