bur

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bur

or

burr,

popular name for fruits that have barbed, pointed, or rough outgrowths. By clinging to the fur or hair of animals and the clothing of man they are transported from the parent plant, often great distances. Some common burs include those of the chestnut, burdock, bur marigold, and cocklebur. Burs are particularly obnoxious to sheep growers because of the difficulty of removing them from wool.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Bur

 

also Pur, a river in the Yakut ASSR, left-bank tributary of the Olenek River. Its length is 501 km, and its basin area is 13, 900 sq km. The Bur flows through the North Siberian Lowland and is fed by snow. The largest tributaries are the Ary-Ongorbut and the Kyra-Khos-Teriuttiakh.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

burr

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

burr

2, buhr, bur
1. short for buhrstone
2. a mass of hard siliceous rock surrounded by softer rock
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005