This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The bright orange inner bark of the black oak, from which a yellow dye is obtained.

n. The dye obtained from this bark.

n. A yellow dye obtained from the bark of the black oak.

n. The black oak tree, Quercus velutina, indigenous to North America.

n. The yellow inner bark of the Quercus tinctoria, the American black oak, yellow oak, dyer's oak, or quercitron oak, a large forest tree growing from Maine to eastern Texas.

n. Quercitrin, used as a pigment. See Quercitrin.

n. The black or dyers' oak, Quercus tinctoria, a tree from 70 to 100 feet high, common through the eastern half of the United States and in southern Canada.

n. The bark of this tree.

n. medium to large deciduous timber tree of the eastern United States and southeastern Canada having dark outer bark and yellow inner bark used for tanning; broad five-lobed leaves are bristle-tipped

n. a yellow dye made from the bark of the quercitron oak tree

"Few previously unknown natural coloring sources brought into Europe at this time proved to have widespread commercial success; quercitron is the only example that comes readily to mind."

oak    oak tree    dye    dyestuff   

quercitrin