- a rough, prickly case around the seeds of certain plants, as the chestnut or burdock.
- any bur-bearing plant.
- something that adheres like a bur.
- Machinery. burr1(defs 1, 3).
- Dentistry. a rotary cutting tool usually of steel or other hard metal shaped into a shank and a head, for removing carious material from teeth and preparing cavities for filling.
- Surgery. a cutting tool resembling that of a dentist, used for the excavation of bone.
- to extract or remove burs from.
Origin of bur1
- Also buhr. a protruding, ragged edge raised on the surface of metal during drilling, shearing, punching, or engraving.
- a rough or irregular protuberance on any object, as on a tree.
- a small, handheld, power-driven milling cutter, used by machinists and die makers for deepening, widening, or undercutting small recesses.
- a lump of brick fused or warped in firing.
- to form a rough point or edge on.
Origin of burr1
- a washer placed at the head of a rivet.
- a blank punched out of a piece of sheet metal.
Origin of burr2
Examples from the Web for bur
A person earning 10 dollars a week can see a 100% increase by getting a raise to 20 bucks a week—bur remains impoverished.The Truth About Older People Having More Sex
January 22, 2014
Eli's been drunk some, bur his girls are really a good deal of help.In the Valley
If the coating has spiny hairs, as in the Chestnut and Beechnut, the whole is a bur.Trees of the Northern United States
Austin C. Apgar
Now Gudruda could bear his words no longer, bur ran to him and knelt beside him.Eric Brighteyes
H. Rider Haggard
If the bolt is too large for a bur, an iron washer may be used.How Two Boys Made Their Own Electrical Apparatus
Thomas M. (Thomas Matthew) St. John
I'll do ellythik you like in reasol, M'ria—(hic)—bur I won't come 'ome.Mr. Punch's Book of Love
- (tr) to remove burs from
- Myanmar (international car registration)
- Myanmar (Burma)
- 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
- a small power-driven hand-operated rotary file, esp for removing burrs or for machining recesses
- a rough edge left on a workpiece after cutting, drilling, etc
- a rough or irregular protuberance, such as a burl on a tree
- British a burl on the trunk or root of a tree, sliced across for use as decorative veneer
- a variant spelling of bur
- to form a rough edge on (a workpiece)
- to remove burrs from (a workpiece) by grinding, filing, etc; deburr
- phonetics 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
- a whirring sound
- to pronounce (words) with a burr
- to make a whirring sound
- a washer fitting around the end of a rivet
- a blank punched out of sheet metal
buhr or bur
- short for buhrstone
- a mass of hard siliceous rock surrounded by softer rock
Word Origin and History for bur
"prickly seed vessel of some plants," c.1300, burre, from a Scandinavian source (cf. Danish borre, Swedish hard-borre, Old Norse burst "bristle"), from PIE *bhars- (see bristle (n.)). Transferred 1610s to "rough edge on metal," which might be the source of the sense "rough sound of the letter -r-" (see burr).
"rough sound of the letter -r-" (especially that common in Northumberland), 1760, later extended to "northern accented speech" in general. Possibly the sound of the word is imitative of the speech peculiarity itself, or it was adapted from one of the senses of bur (q.v.), perhaps from the phrase to have a bur in (one's) throat (late 14c.), which was a figure of speech for "feel a choking sensation, huskiness." OED says the Scottish -r- is a lingual trill, not a true burr.
- A rotary cutting instrument used in dentistry for excavating decay, shaping cavity forms, and reducing tooth structure.
- A drilling tool for enlarging a trephine hole in the cranium.
- Variant ofbur
- A type of pseudocarp in which the outer surface possesses hooks or barbs. Burs become caught in the feathers or hair of animals, which then carry them away to disperse the seeds.