princĭpor

āri
I. v. dep. a. [princeps], to rule (eccl. Lat.).
I. Lit.: principari in nationes, Lact. 14, 13, 19: prolem ... principibus principantem, Sid. Carm. 9, 47; 23, 90.—
II. Transf.: sanguis in nostro corpore principatur, Aug. Prophet. 6.
Lewis & Short
A Latin Dictionary, 1879
An open-access project