Lewis & Short

1. fŏris, is, and more freq. in plur., fŏres, um, f. [Sanscr. dvār; Gr. θύρα; O. H. Germ. tor; Engl. door, etc.; cf. foras], a door, gate; in plur., the two leaves of a door (syn.: porta, janua, valvae, ostium, limen).

  1. I. Lit.
          1. (α) Sing.: crepuit foris, Plaut. Am. 1, 2, 34; cf. id. Cas. 5, 1, 17: foris crepuit, concrepuit, id. Aul. 4, 5, 5; id. Cas. 2, 1, 15; id. Bacch. 4, 9, 134; Ter. Ad. 2, 3, 11: constitit ad geminae limina prima foris, Ov. H. 12, 150: ut lictor forem virgā percuteret, Liv. 6, 34, 6: cum forem cubiculi clauserat, Cic. Tusc. 5, 20, 59: forem thalami claudere, Ov. A. A. 3, 228: forem obdere alicui, id. P. 2, 2, 42: exclusus fore, cum Longarenus foret intus, Hor. S. 1, 2, 67.
          2. (β) Plur.: ex quo (Jano) fores in liminibus profanarum aedium januae nominantur, Cic. N. D. 2, 27, 67: pol, haud periculum est, cardines ne foribus effringantur, Plaut. As. 2, 3, 4 sq.; cf.: sonitum prohibe forum et crepitum cardinum, id. Curc. 1, 3, 1: a nobis graviter crepuerunt fores, Ter. Heaut. 3, 3, 52: ad fores assistere, Cic. Verr. 2, 1, 26, § 66: extra fores limenque carceris, id. Tusc. 5, 28, 80: robustae, Hor. C. 3, 16, 2: invisae, id. S. 2, 3, 262: asperae, id. C. 3, 10, 3: durae, Tib. 1, 1, 56: foribus inest clavis, id. 1, 6, 34: hostes incidentes semiapertis portarum foribus, Liv. 26, 39, 22.
    1. B. Transf., the door, opening, entrance of other things: aeneus equus, cujus in lateribus fores essent, Cic. Off. 3, 9, 38: nassarum, Plin. 32, 2, 5, § 11: apum, id. 21, 14, 48, § 82.
  2. II. Trop.: quasi amicitiae fores aperire, Cic. Fam. 13, 10, 4: artis fores apertas intrare, Plin. 35, 9, 36, § 61: rerum, id. 2, 8, 6, § 31.