1. On a route to some place
   - on the way

Encyclopedia: En route

• ordinate
• ordination
• ordnance
• ordnance store
• Ordnance Survey
• ordonnance
• Ordovician
• Ordovician period
• ordure
• ore
• ore bed
• ore dressing
• ore processing
• Oread
• Oreamnos
• Oreamnos americanus
• orectic
• Orectolobidae
• Orectolobus
• Orectolobus barbatus
• oregano
• Oregon
• Oregon alder
• Oregon ash
• Oregon cedar