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Webster 1913 Edition

Noun.

[F.

quercitron

, the name of the name of tree; L.

quercus

an oak +

citrus

the citron

tree

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.

Quercitrin, used as a pigment. See

Noun.

[L. quercus, an oak.] The bark of the yellow oak, used in dyeing.

quercitron ‎(countable and uncountable, plural quercitrons)