Lewis & Short

Sŭbūra, ae (abbrev. SVG.; v. infra), f., a quarter in Rome, in the second region, between the Esquiline, Viminal, and Quirinal, where provisions were sold, and where many prostitutes dwelt: Subura Junius scribit ab eo, quod fuerit sub antiquā Urbe: quoi testimonium potest esse, quod subest ei loco, qui Terreus murus vocatur. Sed ego a pago potius Succusano dictam puto Succusam, quod in notā etiam nunc scribitur tertia littera C, non B, Varr. L. L. 5, § 48 Müll.; cf.: Subura cum tribus litteris notatur, C litteram ostendit, Quint. 1, 7, 29; cf. Fest. p. 309 Müll.; Liv. 3, 13; Mart. 6, 66, 2; 7, 31, 12; 10, 94, 5: clamosa, id. 12, 18, 2; Pers. 5, 32; Juv. 11, 141 (v. Subura, Becker, Antiq. vol. 1, p. 521 sq.; and cf. id. Gall. vol. 3, p. 44, 2d ed.).
Hence,

  1. A. Sŭbūrā-nus, a, um, adj., of or belonging to Subura, Suburan: regio, Varr. L. L. 5, § 46 Müll.: tribus, id. ib. 5, § 56 ib.; Cic. Agr. 2, 29, 79; Plin. 18, 3, 3, § 13; cf. Fest. p. 302 Müll.: clivus, i. e. the Esquiline, Mart. 5, 22, 5: canes, Hor. Epod. 5, 58: magistra, i. e. a prostitute, Mart. 11, 78, 11; cf. id. 11, 61, 3.
  2. B. Sŭbūrānenses, ĭum, m., the dwellers in the Subura, Fest. s. v. October, p. 178 Müll.