1. Steel with a surface that is much harder than the interior metal

Type of: steel

• farrago
• Farragut
• Farrell
• farrier
• farrow
• farrowing
• farseeing
• Farsi
• farsighted
• farsightedness
• fart
• farther
• farthermost
• farthest
• farthing
• farthingale
• farting
• fartlek
• Faruk I
• FAS
• fasces
• fascia
• fasciated
• fasciation
• fascicle