Lewis & Short

1. bĭbŭlus, a, um, adj. [1. bibo].

  1. I. Lit., drinking readily, freely (poet. or in postAug. prose): bibulus Falerni, Hor. Ep. 1, 14, 34: potores, id. ib. 1, 18, 91.
    More freq.,
    1. B. Transf., of inanim. things, that sucks in or absorbs moisture: harena, sand that imbibes, drinks up moisture, Lucr. 2, 376; Verg. G. 1, 114; Ov. M. 13, 901: lapis, a stone that absorbs moisture, Verg. G. 2, 348 (qui harenarius vocatur, Serv.); Col. 3, 15, 4: litus, Ov. H. 16 (17), 139: favilla, Verg. A. 6, 227: radix, Ov. M. 14, 632: talaria, moistened, id. ib. 4, 730: medulla, id. ib. 4, 744: ollae bibulae aut male coctae, Col. 12, 45, 3: papyrus, growing in moist places, Luc. 4, 136: charta, blotting-paper, Plin. Ep. 8, 15, 2; cf. Isid. Orig. 6, 10, 1: taenia papyri, Plin. 13, 12, 25, § 81: nubes, Ov. M. 14, 368 (cf. 1. bibo, B. 1.): lanae, absorbing or taking color, id. ib. 6, 9 (v. poto).
  2. II. Trop., of hearing (cf. 1. bibo, II.): aures, ready to hear, listening, Pers. 4, 50.