woad

An annual Eurasian plant (Isatis tinctoria) in the mustard family, formerly cultivated for its leaves that yield a blue dye.

The dye obtained from this plant.

A cruciferous plant, Isatistinctoria, formerly much cultivated in Great. Britain on account of the blue dye extracted from its pulped and fermented leaves.

An herbaceous cruciferous plant (Isatis tinctoria) of the family Cruciferae (syn. Brassicaceae). It was formerly cultivated for the blue coloring matter derived from its leaves. See isatin.

A blue dyestuff, or coloring matter, consisting of the powdered and fermented leaves of the Isatis tinctoria. It is now superseded by indigo, but is somewhat used with indigo as a ferment in dyeing.

the weld (Reseda luteola). See Weld.

a mill grinding and preparing woad.

Common name of the plant Isatis tinctoria whose leaves are used to make a blue dye.

The dye made from the plant Isatis tinctoria.

to plant or cultivate woad