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

• steal
• steal away
• stealer
• stealing
• stealth
• stealth aircraft
• stealth bomber
• stealth fighter
• stealthily
• stealthiness
• stealthy
• steam
• steam bath
• steam boiler
• steam chest
• steam clean
• steam coal
• steam engine
• steam fitting
• steam heating
• steam iron
• steam line
• steam locomotive
• steam organ
• steam pipe