woad(redirected from Vitrum)
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1. An annual Eurasian plant (Isatis tinctoria) in the mustard family, formerly cultivated for its leaves that yield a blue dye.
2. The dye obtained from this plant.
[Middle English wode, from Old English wād.]
1. (Plants) a European plant, Isatis tinctoria, formerly cultivated for its leaves, which yield a blue dye: family Brassicaceae (crucifers). See also dyer's-weed, dyer's rocket
2. (Dyeing) the dye obtained from this plant, used esp by the ancient Britons, as a body dye
[Old English wād; related to Old High German weit; Middle Dutch wēd, Latin vitrum]
1. any Old World plant of the genus Isatis, of the mustard family, esp. I. tinctoria, formerly cultivated for a blue dye extracted from its leaves.
2. this dye.
[before 1000; Middle English wode, Old English wād, c. Old High German weit; akin to French guède, Medieval Latin waizda < Germanic]
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|Noun||1.||woad - a blue dyestuff obtained from the woad plant|
|2.||woad - any of several herbs of the genus Isatis|
dyer's woad, Isatis tinctoria - European biennial formerly grown for the blue coloring matter yielded by its leaves