柯林斯詞典woad /w??d/ 1. N a European plant, Isatis tinctoria, formerly cultivated for its leaves, which yield a blue dye: family Brassicaceae (crucifers) 菘藍(lán)→see alsodyer's-weed ,dyer's rocket 返回 woad劍橋詞典a blue substance obtained from plants that some people in the past used to paint their bodies with （植物）菘藍(lán)，大青 返回 woad