1. a protruding, ragged edge raised on the surface of metal during drilling, shearing, punching, or engraving.
2. a rough or irregular protuberance on any object, as on a tree.
3. a small, handheld, power-driven milling cutter, used by machinists and die makers for deepening, widening, or undercutting small recesses.
4. a lump of brick fused or warped in firing.

5. to form a rough point or edge on.
6. deburr.

1. a washer placed at the head of a rivet.
2. a blank punched out of a piece of sheet metal.

1. a pronunciation of the r-sound as a uvular trill, as in certain Northern English dialects.
2. a pronunciation of the r-sound as an alveolar flap or trill, as in Scottish English.
3. any pronunciation popularly considered rough or nonurban.
4. a whirring noise.

5. to speak with a burr.
6. to speak roughly, indistinctly, or inarticulately.
7. to make a whirring sound.

8. to pronounce (words, sounds, etc.) with a burr.

1. burstone.

1. vice president of the U.S. 1801–05.

1. a small power-driven hand-operated rotary file, esp for removing burrs or for machining recesses
2. a rough edge left on a workpiece after cutting, drilling, etc
3. a rough or irregular protuberance, such as a burl on a tree
4. a burl on the trunk or root of a tree, sliced across for use as decorative veneer

5. a variant spelling of bur

6. to form a rough edge on (a workpiece)
7. to remove burrs from (a workpiece) by grinding, filing, etc; deburr

1. an articulation of (r) characteristic of certain English dialects, esp the uvular fricative trill of Northumberland or the retroflex r of the West of England
2. a whirring sound

3. to pronounce (words) with a burr
4. to make a whirring sound

1. a washer fitting around the end of a rivet
2. a blank punched out of sheet metal

1. short for buhrstone
2. a mass of hard siliceous rock surrounded by softer rock

1. Aaron . 1756–1836, US vice-president (1800–04), who fled after killing a political rival in a duel and plotted to create an independent empire in the western US; acquitted (1807) of treason

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