1. Birthwort of the eastern United States woodlands
   - Virginia serpentaria, Virginia serpentary, Aristolochia serpentaria

Type of: Aristolochia clematitis, birthwort

• Northwest Passage
• Northwest Territories
• northwest wind
• northwester
• northwesterly
• northwestern
• northwestern United States
• northwestward
• northwestwardly
• nortriptyline
• Noruz
• Norvasc
• Norvir
• Norway
• Norway lobster
• Norway maple
• Norway rat
• Norway spruce
• Norwegian
• Norwegian elkhound
• Norwegian krone
• Norwegian lobster
• Norwegian monetary unit
• Norwegian Sea
• Norwich