Lewis & Short

quingēnārĭus, a, um, adj. [quingeni].

  1. I. Consisting of five hundred each (post-Aug.): cohortes, Curt. 5, 2, 3.
  2. II. Consisting of five hundred: thorax, i. e. of five hundred pounds weight, Plin. 7, 20, 19, § 83: lanx, id. 33, 11, 52, § 145: poena, a fine of five hundred asses, Gai. Inst. 4, 14 init.