柯林斯词典woad /wəʊd/ 1. N a European plant, Isatis tinctoria, formerly cultivated for its leaves, which yield a blue dye: family Brassicaceae (crucifers) 菘蓝→see alsodyer's-weed ,dyer's rocket 返回 woad剑桥词典a blue substance obtained from plants that some people in the past used to paint their bodies with （植物）菘蓝，大青 返回 woad