Lewis & Short

spūmōsus, a, um, adj. [spuma].

  1. I. Lit., full of foam, foaming (poet. and in postAug. prose): unda, Verg. A. 6, 174: litora, Cat. 64, 121: undae, Ov. M. 1, 570: aequor, Luc. 2, 627: morsus equi, Claud. IV. Cons. Hon. 548: spumosus nec sanguineus (pulmo), Plin. 11, 37, 72, § 188.
    Comp.: Addua, Claud. VI. Cons. Hon. 458.
  2. * II. Trop.: carmen, frothy, bombastic, Pers. 1, 96.