Definitions for: Bur


[n] small bit used in dentistry or surgery
[n] seed vessel having hooks or prickles
[v] remove the burrs from



Webster (1913) Definition: Bur, Burr Burr, n. [OE. burre burdock; cf. Dan. borre,
OSw. borra, burdock, thistle; perh. akin to E. bristle (burr-
for burz-), or perh. to F. bourre hair, wool, stuff; also,
according to Cotgrave, ``the downe, or hairie coat, wherewith
divers herbes, fruits, and flowers, are covered,'' fr. L.
burrae trifles, LL. reburrus rough.]
1. (Bot.) Any rough or prickly envelope of the seeds of
plants, whether a pericarp, a persistent calyx, or an
involucre, as of the chestnut and burdock. Also, any weed
which bears burs.

Amongst rude burs and thistles. --Milton.

Bur and brake and brier. --Tennyson.

2. The thin ridge left by a tool in cutting or shaping metal.
See Burr, n., 2.

3. A ring of iron on a lance or spear. See Burr, n., 4.

4. The lobe of the ear. See Burr, n., 5.

5. The sweetbread.

6. A clinker; a partially vitrified brick.

7. (Mech.)
(a) A small circular saw.
(b) A triangular chisel.
(c) A drill with a serrated head larger than the shank; --
used by dentists.

8. [Cf. Gael. borr, borra, a knob, bunch.] (Zo["o]l.) The
round knob of an antler next to a deer's head. [Commonly
written burr.]

Bur oak (Bot.), a useful and ornamental species of oak
(Quercus macrocarpa) with ovoid acorns inclosed in deep
cups imbricated with pointed scales. It grows in the
Middle and Western United States, and its wood is tough,
close-grained, and durable.

Bur reed (Bot.), a plant of the genus Sparganium, having
long ribbonlike leaves.

Synonyms: burr, burr, burr

See Also: beggar-ticks, bit, burr drill, dentist's drill, pericarp, remove, seed vessel, spanish needles, take, take away, withdraw

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