1. Perennial herb of the eastern United States having inconspicuous greenish flowers and narrow leaves that are very aromatic when bruised
   - basil mint

Type of: mountain mint

• oration
• orator
• oratorical
• oratorio
• oratory
• oratrix
• orb
• orb web
• orb-weaver
• orb-weaving
• orb-weaving spider
• orbicular
• orbiculate
• orbiculate leaf
• Orbignya
• Orbignya cohune
• Orbignya martiana
• Orbignya phalerata
• Orbignya spesiosa
• Orbison
• orbit
• orbit period
• orbital
• orbital cavity
• orbital motion