burl

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burl

1. a small knot or lump in wool
2. a roundish warty outgrowth from the trunk, roots, or branches of certain trees

burl

A decorative pattern in wood caused by adjacent knots. See also: Wood

Burl

 

a distinctive excresence of the trunks, branches, and roots of leafy and, more rarely, coniferous trees. Burls apparently develop as a result of the damage done to trees by fires, fungi, and pasturing cattle. They appear where there is an overabundance of shoots and where dormant buds and adventitious buds grow closely together. In these areas of the tree there is also an intense development of cordate rays with the formation of tracheidal flexures and wood fibers (cross-grained wood). The wood in a burl grows 1½ to 3 times faster than the normal wood of a tree; it is also heavier and harder. The planes exposed after cutting have beautiful patterns. Burls are used by joiners, carvers, and turners as material for the production of small articles. The wood from burls is also used for veneers. Walnut burls, which reach a diameter of 1.5-2 m, are particularly valuable. In the USSR, walnut burls are found mainly in Middle Asia and, occasionally, in the Caucasus. Birch, linden, and alder burls are used in the production of particularly small items.

burl

[bərl]
(botany)
A hard, woody outgrowth on a tree, usually resulting from the entwined growth of a cluster of adventitious buds.
(materials)
In lumber or veneer, a localized severe distortion of the grain that is generally rounded in outline.

burl

1. An abnormal growth or protuberance on a tree. Also called knur, knurl.
2. Wood veneer cut from burls.
References in periodicals archive ?
Dr Burls told The Birmingham Post that her friend was determined to oppose the deportation to highlight the conditions at Nablus.
The last Leger winner for Harvey was 4-7 favourite Clonalvy Pride in 1961 while Bob Burls bowed out with Crefogue Dancer in 1969.
A burl is a growth above the ground, usually found near the base of the tree," said Yager, "although some burls are found way up a tree.
Burls are prized by woodworkers, who value these relatively rare formations for their eccentric and beautiful grain, so it seems surprising, if not perverse, for Bamburg to have used them as little more than building blocks.
Wendell Wood of the conservation group Oregon Wild said he was out hiking recently and found two redwood trees with burls cut off.
Mappa burl is not as intense a figure as some other burls.
Whoever first sliced a burl to discover the wondrous wood contained inside could easily have been the first to coin the phrase "Don't judge a book by its cover.
With burrs and burls, an injury or irritation can cause stunted growth, which causes the tree to develop a contorted, gnarled mass of dense woody tissue.
During the past week the Company has received bids on just seven of the selected burls for a total amount in excess of $350,000 U.
His company deals mainly with the hard-to-find veneers, including amboyna burl and thuya burl.
Mappa bud's heartwood is generally a pale-to-medium-colored brown and the burls are little spots of reddish brown and black.
While burls can occur with all species, redwood trees seem to have a higher occurrence of burls than other species.

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