Lewis & Short

Stĭmŭla (Sĭmĭla, Liv. 39, 12), ae, f. [stimulus], the goddess who pricks on, excites, stimulates to action or pleasure, Aug. Civ Del, 4, 11; 4, 16; perh. for Semele, Ov. F. 6, 503; Schol. Juv. 2, 3; cf. Müller, Etrusk. 2, 77.