bur
bur / bər/ (also burr) • n. 1. a prickly seed case or flowerhead that clings to animals and clothes. ∎ [usu. as adj.] a plant that produces burs, e.g., bur reed.2. [as adj.] denoting wood containing knots or other growths that show a pattern of dense swirls in the grain when sawn, used for veneers and other decorative woodwork: bur walnut.3. variant spelling of burr (senses 2, 3, and 5).
bur
bur (ber) n.
1. a cutting instrument that fits in a dental handpiece (see drill). Burs are mainly used for cutting cavities in teeth, removing old restorations, and preparing teeth to receive crowns.
2. (burr) a surgical drill for cutting through bone. b. hole a circular hole drilled through the skull to release pressure inside the skull or to facilitate biopsies and other procedures.
1. a cutting instrument that fits in a dental handpiece (see drill). Burs are mainly used for cutting cavities in teeth, removing old restorations, and preparing teeth to receive crowns.
2. (burr) a surgical drill for cutting through bone. b. hole a circular hole drilled through the skull to release pressure inside the skull or to facilitate biopsies and other procedures.
bur
bur, burr3 rough or prickly seed-vessel or flower-head XIV. perh. of Scand. orig.; cf. Da. burre bur, burdock, Sw. kardborre burdock, perh. rel. to BRISTLE.
bur
burr1 rough edge on cut metal, etc. XVII. prob. same word as BUR.
Hence as vb. XIX.
Hence as vb. XIX.
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