名詞 burl:

1. the wood cut from a tree burl or outgrowth; often used decoratively in veneer
2. a large rounded outgrowth on the trunk or branch of a tree
3. soft lump or unevenness in a yarn; either an imperfection or created by design
   同義詞：slub, knot

動詞 burl:

1. remove the burls from cloth

burl

n.（名詞）
A knot, lump, or slub in yarn or cloth.
斑點(diǎn)，粒結(jié)：紗線或織布上的結(jié)、斑塊或紗頭

A large, rounded outgrowth on the trunk or branch of a tree.
樹瘤：樹干或枝上生出的大的圓形突出物
The wood cut from such an outgrowth, often used decoratively as a veneer.
樹疤制成的木板：從這樣的樹瘤上砍下的木頭，經(jīng)常當(dāng)作裝飾性的鑲木板
v.tr.（及物動詞）
burled,burl.ing,burls
To dress or finish (cloth) by removing knots, lumps, slubs, or loose threads.
消除扭結(jié)：通過除去斑塊、紗節(jié)或松開線頭來制作或修飾（衣服）

來源：
Middle English burle
中古英語 burle
from Old French bourle [tuft of wool] [diminutive of] bourre [coarse wool]
源自 古法語 bourle [一簇毛線] [] bourre的小后綴 [粗糙的毛線]
from Late Latin burra [shaggy garment]
源自 后期拉丁語 burra [毛茸茸的衣服]

【引伸】
burl.er
n.（名詞）