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

Antonym: double-barreled [US]

• West Point
• West Saxon
• west southwest
• West Sussex
• West Tocharian
• West Virginia
• West Virginian
• west wind
• West Yorkshire
• west-central
• West-sider
• westbound
• wester
• westering
• westerly
• western
• Western Australia
• Western Australia coral pea
• Western ax
• Western axe
• Western balsam poplar
• western big-eared bat
• Western birch
• western black-legged tick
• western blackberry