1. Milled, as the head of a screw, or the edge of a coin 
2. Full of knots; gnarled

1. To provide with ridges, to assist the grasp, as in the edge of a flat knob, or coin; to mill

Encyclopedia: Knurl

• idle talk
• idle wheel
• idle words
• idleness
• idler
• idler pulley
• idling
• idly
• Ido
• idocrase
• idol
• idol worship
• idol worshiper
• idolater
• idolatress
• idolatrous
• idolatrously
• idolatry
• idolisation
• idolise
• idolised
• idoliser
• idolization
• idolize
• idolized