f. [gaatt, Ivar Aasen], the rabbet of a door-sill, against which the door shuts; hann gengr þá útar frá konungi til gáttar, to the door-sill, Jómsv. 12; hence such phrases as, hurð hnigin á gátt, a door shut but not locked, Gísl. 29, Fas. ii. 345; sá gægðisk út hjá gáttinni, Bárð. 171; cp. gætti; hurð á hálfa gátt, a door half open, = á klofa in old writers; innan-gátta, in-doors, Eb. 302; utan-gátta, out-of-doors, Stj. 436. gáttar-tré, n. a door-post, Gþl. 345.

II. in pl. the door-way, the place nearest to the door, Hm. 1; hón lauk upp hurðinni ok stóð í gáttum stund þá, Fb. i. 547.—Gátt is now in Icel. esp. used of the space (esp. in stalls) between the door-post and the wall, hence troða upp í gáttina, to fill up the ‘gatt.’