LSJ
τά, = θύρα, door, in pl., Il. 2.415, Od. 18.385, 21.49, Pi. I. 7 (6).6, E. Ba. 448, Or. 1474 (lyr.), Call. Ap. 3, etc. ; prop. the door-casing, frame, IG 11(2).161 A 66 (Delos, iii BC); θύραις ἁρμοζοίσαις τοῖς θυρέτροισι ib. 12(2).14.7; θ. μαρμάρινα ib. 6; so in sg., ib. 4.1484.30 (Epid.), BCH 6.24 (Delos, ii BC), Plb. 30.18.5, AP 5.293.7 (Agath.), Ps.-Luc. Philopatr. 4; — hence θυρετρεᾶς·̣ φλιᾶς, Hsch.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)