1. Stout perennial grass of western North America
   - giant ryegrass, Leymus condensatus

Type of: lyme grass

• Mason and Dixon line
• Mason and Dixon's line
• mason bee
• Mason City
• Mason jar
• mason wasp
• mason's level
• mason's trowel
• Mason-Dixon line
• masonic
• Masonite
• masonry
• Masora
• Masorah
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• Masoud
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• masque
• masquer
• masquerade
• masquerade ball
• masquerade costume
• masquerade party