Lewis Short
(adjective) : quīnārĭus, a, um, quini
* Containing five (mostly post-Aug.): quinaria (fistula) dicta a diametro quinque quadrantum,a pipe which was five quarter-digits in diameter,Front. Aquaed. 25; so, fistulae,Plin. 31, 6, 31, § 58: quinarius nummus, and absol., quinarius, a half denarius: denarii quod denos aeris valebant: quinarii, quod quinos,Varr. L. L. 5, § 173 Müll.; Plin. 33, 3, 13, § 44: numerus,Serv. Verg. G. 1, 277; Macr. Somn. Scip. 1, 6.
Charlton T. Lewis, Charles Short, A Latin Dictionary