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

Type of: lyme grass

• rocker arm
• rockers
• rockery
• rocket
• rocket base
• rocket cress
• rocket engine
• rocket engineer
• rocket firing
• rocket fuel
• rocket larkspur
• rocket launcher
• rocket launching
• rocket propellant
• rocket propellent
• rocket propulsion
• rocket range
• rocket salad
• rocket science
• rocket scientist
• rocket-propelled
• rocketeer
• rocketry
• rockfall
• rockfish