Lewis & Short

bĭfer, ĕra, ĕrum, adj. [bis-fero].

  1. I. Lit., bearing fruit twice a year: arbor, malus, etc., Varr. R. R. 1, 7, 7: ficus, Col. 10, 403; 5, 10, 11; Plin. 13, 22, 41, § 121; 16, 27, 50, § 114; Suet. Aug. 76: biferique rosaria Paesti, Verg. G. 4, 119 (acc. to Serv. the rose blossomed twice in a year at Paestum).
  2. * II. Transf., of twofold form: biferum Centauri corpus, a horse and man, Manil. 4, 230.