WOAD," a herbaceous plant, known botanically as I sails tinctoria (natural order Cruciferae), which occurs sporadically in England in fields, on banks and chalk-pits. The erect branched stem, i to 3 ft. in height, bears sessile leaves and terminal clusters of small yellow flowers; the brown pendulous pods are J in. long. The ancient Britons stained themselves with this plant. It is still cultivated in Lincolnshire.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)