Lewis & Short

prō-mulsis, ĭdis, f. [mulsum].

  1. I. Lit., a relish of eggs, salt fish, mead, etc., served first at a Roman banquet, a whet, antepast, Cic. Fam. 9, 16, 8; 9, 20, 1.
  2. II. Transf.
    1. A. A foretaste: libidinis, Petr. 24 fin.
    2. B. For promulsidare, the tray for the antepast, Tert. Pall. 5.