Lewis & Short

ob-sorbĕo, ŭi, 2, v. a., to sup or drink up, to swallow or gulp down (poetical).

  1. I. Lit., Plaut. Mil. 3, 2, 21: aquam, id. Curc. 2, 3, 34: placentas, to gulp down, bolt, Hor. S. 2, 8, 24: unionem liquefactum, Plin. 9, 35, 58, § 121.
    Absol.: ter die absorbebat, terque eructabat, Hyg. Fab. 125: ursis homines non plane comedendi, sed obsorbendi objectabantur, Lact. Mort. Pers. 21, 6.
  2. II. Transf.: fores, Quae obsorbent quicquid venit intra pessulos, swallow up, Plaut. Truc. 2, 3, 29 (dub.; al. absorbent).