1. Of the color of slate or granite
   - slate-grey [Brit, Cdn], slate-gray [US], slaty-grey [Brit, Cdn], slaty-gray [US], slaty, slatey, stone-grey [Brit, Cdn]

See also: achromatic, neutral

• long-term
• long-term memory
• long-wearing
• long-winded
• long-windedly
• long-windedness
• long-wooled
• longan
• longanberry
• longanimity
• longanimous
• longar palm
• longbeard
• longboat
• longbow
• longbowman
• longcase clock
• longe
• longed-for
• longer
• longest
• longevity
• Longfellow
• longfin mako
• longhair