rubiginous
adjective
ru·big·i·nous
(ˈ)rü¦bijənəs
variants or less commonly rubiginose
-ˌnōs
: of or marked with a rusty red color : ferruginous
Word History
Etymology
Latin robiginosus, rubiginosus rusty, from robigin-, rubigin-, robigo, rubigo + -osus -ose; akin to Latin ruber red
First Known Use
circa 1727, in the meaning defined above