Lewis & Short

1. Rūmīna (in some MSS. Rūmĭa), ae,f. [rumis, qs. she that offers her breast], a Roman goddess of nursing mothers, who was worshipped in a separate temple near the fig-tree under which Romulus and Remus had sucked the breast (rumis) of the shewolf, Varr. R. R. 2, 11, 5; id. ap. Non. 167, 30 sq. (v. the passages under rumis); Aug. Civ. Dei, 4, 11; 6, 19 fin.; 7, 11.
Hence,

  1. A. Rūmīnālis, e, adj.: ficus, the fig-tree of Romulus and Remus, Liv. 1,4,5 (where,from a false etymology, the earlier form is said to have been Rumularis, Weissenb. ad loc.; cf. Serv. Verg. A. 8, 90: alii a Romulo velint dictam quasi Romularem); Tac. A. 13, 58; Aur. Vict. Orig. 20 fin.; Fest. p. 270 Müll.; cf. id. p. 400 ib.; Serv. 1. 1.; Varr. L. L. 5, § 54 Müll.
    By poet. license, it is also called,
  2. B. Rūmĭna ficus, Ov. F. 2, 412 (where, as above in Liv., from a false etymology, a pretended older form, Romula, is given).