mercedicus Save DMLBS Du Cange mercedicus, ~ius [ML] , one who speaks for money. ~ius ‥ i. propter mercedem dicens vel loquens Osb. Glouc. Deriv. 337; ~ius, propter mercedem loquens Ib. 361. MERCEDICUS. Loquens propter Mercedem. Dief.