woad

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a blue dyestuff obtained from the woad plant
• Hypernyms:
dye, dyestuff
2. any of several herbs of the genus Isatis
• Hypernyms:
herb, herbaceous plant
• Hyponyms:
dyer's woad, Isatis tinctoria
• Member Holonyms:
Isatis, genus Isatis