1. Coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico
   - western ragweed, perennial ragweed

Type of: ambrosia, bitterweed, ragweed

• primary subtractive colour for light
• primary syphilis
• primary tooth
• primary winding
• primate
• Primates
• primateship
• primatology
• Primaxin
• prime
• prime factor
• prime interest rate
• prime meridian
• prime minister
• prime mover
• prime number
• prime of life
• prime quantity
• prime time
• primed
• primer
• primer coat
• primero
• primeval
• primidone