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

Encyclopedia: Ferruginous

• secondary modern school
• secondary school
• secondary sex character
• secondary sex characteristic
• secondary sexual characteristic
• secondary storage
• secondary syphilis
• secondary winding
• seconder
• secondhand
• secondhand car
• secondly
• secondment
• secondo
• seconds hand
• Secotiaceae
• Secotiales
• secpar
• secrecy
• secret
• secret agent
• secret approval
• secret ballot
• secret code
• Secret Intelligence Service