1. A contorted knot in wood; a cross-grained protuberance; a nodule; a boss or projection
   - knurl 
2. A knot in wood; a protuberance
   - knag

Derived forms: knurs

• barred
• barred owl
• barred pickerel
• barrel
• barrel cactus
• barrel knot
• barrel maker
• barrel of laughs
• barrel organ
• barrel roll
• barrel vault
• barrel-shaped
• barreled
• barrelfish
• barrelful
• barrelhead
• barrelhouse
• barrelled
• barrels
• barren
• barren ground caribou
• barrenness
• barrenwort
• barrette
• barretter