1. Having one barrel
   "most guns are single-barreled"
   - single-barrelled [US]

Antonym: double-barreled [US]

• rocket-propelled
• rocketeer
• rocketry
• rockfall
• rockfish
• rockfoil
• Rockford
• Rockies
• rockiness
• rocking chair
• rocking horse
• Rockingham
• Rockingham podocarp
• rocklike
• rockling
• rockrose
• rockrose family
• rockslide
• rockweed
• Rockwell
• Rockwell Kent
• rocky
• Rocky Marciano
• Rocky Mountain bee plant
• Rocky Mountain bighorn