n. or f. pl., in mod. usage always fem., and often so in old writers; sometimes even in old MSS.: neut. with the article; dyrrin with a double r (or dyrin, Kb. 42 new Ed., Stj. 520, Edda 29, Nj. 198): fem. dyrnar; aðrar dyrr, Fms. iv. 220, 221; dyrr byrgðar, Stj. 40; einar dyr, Sturl. i. 189; dyr opnar, id. (but dyrin, id., one line below, perhaps wrongly by the transcriber), önnur dyrr, Clem. 143 (Unger): in most cases, however, the gender of the gen. and dat. cannot be discerned: there is hardly any instance of its neuter use if joined to an adjective; thus, in Njála we read, gengu þeir þá inn allir ok skipnðusk í dyrrin (neut.); but only four lines below, ef nokkurar væri laundyrr á: hversu margar dyrr eru á Valhöll eða hversu stórar, Edda 25; but settisk Þórr í dyrrin, 29: in old writers the gen. and dat. are spelt with u, dura, durum, and that they were so pronounced may be seen from Skálda 163—þegar gestrinn kveðr ‘dura,’ þá skyldi eigi bóndinn ‘dúra;’ cp. also Grág. ii. 194, Fms. iv. 221, viii. 161, Gm. 23, Sturl. iii. 218, Edda 25, Landn. 231; but dyra, dyrum, Ísl. ii. 342 (rare): in mod. usage y throughout (spelt dyra, dyrum, proncd. as i):—[Gr. θύρα; Goth. daur, neut., and dauro, fem.; A. S. duru; Old Engl. dore (now door); Dan. dör; Swed. dörr: Germ. thüre: the root vowel is short in Gr. and Goth. as well as the Scandin.]:—a door, viz. the opening (hurð is Lat. janua); karl-dyrr, branda-d., úti-d., leyni-d., and-d., eldahús-d., Sturl. iii. 218: synztu-d., id.: úti-dyrr enar syðri, 185; suðr-dyrr, 186; syðri-d., 190; skála-d. nyrðri, 187; kvenna-skála-d., 188; í þeim dyrum er skálar mættusk, 189; and-dyri hit syðra, 218; sund-d. (= suðr-dyr?), ii. 106; stofu-d., 181; dýrshöfuðs-d., i. 106, a door over which a stag’s head is placed.

COMPDS: duradómr, duragætti, durastafr, durastoð, duraumbuningr, duraveggr, duravörðr, dyradrótt.