prōpulsātĭo, ōnis, f. [propulso],
a driving back , a keeping or warding off , a repelling , repulse (rare but class.): periculi, Cic. Sull. 1, 2: criminis, Tiro ap. Gell. 7, 3, 15.
prōpulsātiō ōnis, f propulso, a driving back, warding off : periculi. ...
An Elementary Latin Dictionary