1. Cast iron to which nickel has been added to make it resist abrasion
   - Ni-hard

Type of: alloy cast iron, alloy iron

• nightlife
• nightlong
• nightly
• nightmare
• nightmarish
• nightrider
• nightshade
• nightshirt
• nightspot
• nightstand
• nightstick
• nighttime
• nightwalker
• nightwear
• nightwork
• nighty
• nigra
• nigrescent
• nigrify
• Nigroporus
• Nigroporus vinosus
• NIH
• nihil
• nihil obstat
• nihilism