burr
noun
[ bəː ]
• a whirring sound, such as a phone ringing tone or the sound of cogs turning.
• a rough edge or ridge left on an object (especially of metal) by the action of a tool or machine.
• a small rotary cutting tool with a shaped end, used chiefly in woodworking and dentistry.
• a siliceous rock used for millstones.
• a prickly seed case or flower head that clings to clothing and animal fur.
• denoting wood containing knots or other growths which show a pattern of dense swirls in the grain when sawn, used for veneers and other decorative woodwork.
• "burr walnut"
• the coronet of a deer's antler.
burr
verb
• make a whirring sound.
• form a rough edge on (metal).
Origin:
Middle English (in burr (sense 5 of the noun)): probably of Scandinavian origin and related to Danish burre ‘burr, burdock’, Swedish kard-borre ‘burdock’.
