1. Resembling iron rust in appearance or colour; brownish red, or yellowish red 
2. Partaking of iron; containing particles of iron

Encyclopedia: Ferruginous

• futon
• futtock
• futtock shroud
• future
• future date
• future day
• future perfect
• future perfect tense
• future progressive
• future progressive tense
• future tense
• futureless
• futures contract
• futures exchange
• futures market
• futurism
• futurist
• futuristic
• futuristics
• futurity
• futurologist
• futurology
• futz
• fuze
• fuzee