Lewis Short
(adjective) : quādrŭplex, ĭcis, quattuor-plico.
* Fourfold, quadruple: pecunia,Plaut. Curc. 5, 2, 21: ordo,Liv. 30, 10: quadruplici radice,Plin. 27, 8, 38, § 60.—*
* Poet., in gen., four: stellae,Cic. Arat. 92.
* As subst.: quādrŭplex, ĭcis, n., a fourfold amount: gubernatoribus duplex, magistris quadruplex dedit,Liv. 45, 42, 1.
Charlton T. Lewis, Charles Short, A Latin Dictionary