1. A hard knot or lump in wood; a gnarl.
2. A small hard ball used in the game of knurr and spell, an old English game.
Usage: chiefly British; historical

Examples

• The carpenter carefully worked around the knurr in the oak board.
• The old tree trunk was covered with knurrs and rough patches.
• In the traditional game of knurr and spell, players hit a wooden knurr with a bat.
• The knurr on the surface of the wood made it difficult to sand smooth.
• Children in medieval England played with a knurr and a wooden stick.