Lewis & Short

Aequĭmaelĭum (better than Aequĭmēl-), i, n., the open space in Rome below the Capitol, not far from the Carcer, where had stood the house of the turbulent tribune of the people, Sp. Mœlius, who was slain by Ahala during the dictatorship of Cincinnatus, now in the Via di Marforio: Aequimaelium, quod aequata Maeli (Meli) domus publico, quod regnum occupare voluit is, Varr. L. L. 5, § 157 Müll.; so Liv. 4, 16, 1; 38, 28, 3. In Cicero’s time a lamb-market seems to have been there, Cic. Div 2, 17, 39. Cf. on this locality, Nieb. Röm. Gesch. 2, 474; Amm. 28; and Becker’s Antiq. 1, p. 485 sq.