Eccl. Antiq. [A mod. adaptation of med.L. farsa (see FARCE sb.2] An amplificatory phrase inserted into a liturgical formula; also, each of the hortatory or explanatory passages in the vernacular interpolated between the Latin sentences in chanting the lesson or epistle.
1842. Hook, Church Dict., 296. The subdeacon first repeated each verse of the epistle or lectio, in Latin, and two choristers sang the Farse, or explanation.