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

• lyophilise
• lyophilised
• lyophilization
• lyophilize
• lyophilized
• lypressin
• Lyra
• lyrate
• lyrate leaf
• lyre
• lyre snake
• lyre-shaped
• lyrebird
• lyreflower
• lyric
• lyric poem
• lyrical
• lyricality
• lyrically
• lyricism
• lyricist
• lyrist
• Lyrurus
• Lyrurus mlokosiewiczi
• Lyrurus tetrix