Meaning

noun a blue dyestuff obtained from the woad plant

noun any of several herbs of the genus Isatis

originFrom Middle English wode, from Old English wād (“woad”), from Proto-West Germanic *waiʀd, from Proto-Germanic *waizdaz (“woad”), from Proto-Indo-European *woydʰ-. Cognate with Old Frisian wēd (“woad”), Dutch wede (“woad”), German Waid (“woad”), and with French guède, Italian guado (“woad”) (both borrowed from Frankish). See also weed.

Etymology from Wiktionary, CC BY-SA 3.0