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Newcastle burr
(gcide) | Burr \Burr\ (b[^u]r), n. [See Bur.] (Bot.)
1. A prickly seed vessel. See Bur, 1.
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2. The thin edge or ridge left by a tool in cutting or
shaping metal, as in turning, engraving, pressing, etc.;
also, the rough neck left on a bullet in casting.
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The graver, in plowing furrows in the surface of the
copper, raises corresponding ridges or burrs.
--Tomlinson.
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3. A thin flat piece of metal, formed from a sheet by
punching; a small washer put on the end of a rivet before
it is swaged down.
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4. A broad iron ring on a tilting lance just below the gripe,
to prevent the hand from slipping.
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5. The lobe or lap of the ear.
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6. [Probably of imitative origin.] A guttural pronounciation
of the letter r, produced by trilling the extremity of the
soft palate against the back part of the tongue; rotacism;
-- often called the Newcastle burr, {Northumberland
burr}, or Tweedside burr.
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7. The knot at the bottom of an antler. See Bur, n., 8.
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