1. Of or relating to the geographical region of Caucasia
   - Caucasian

See also: Caucasus

• robusta
• robusta coffee
• robustious
• robustly
• robustness
• roc
• rocaille
• rocambole
• roccella
• Roccella tinctoria
• Roccellaceae
• Rocco Marciano
• Roccus
• Roccus saxatilis
• Rocephin
• Rochambeau
• Roche limit
• Rochelle powder
• Rochelle salt
• Rochelle salts
• Rochester
• rochet
• Rochon prism
• rock
• rock 'n' roll