D defs.my
Entry 2 senses Webster, 1913

Ferruginous

/(fĕr*rṳ"jĭ*nŭs)/ · Fer·ru·gi·nous · IPA /fəˈɹudʒənəs/
01 a. Partaking of iron; containing particles of iron.
  1. 1.
    Partaking of iron; containing particles of iron.
  2. 2.
    Resembling iron rust in appearance or color; brownish red, or yellowish red.