noun
woad
WOHD/wəʊd/
A plant whose leaves are used to make blue dye.
Woad grows in our garden, and its leaves provide blue dye.

Etymology
Old English wad named both the plant and the blue dye extracted from its fermented leaves. The name links the plant with its useful product, but its deeper origin remains uncertain.
In context
indigo is a dye and I mentioned it comes from the indigo fara plant also commonly called woad and from this you extract the colored liquid
More examples
- She harvests woad leaves to make dye for wool.
- The woad produces clusters of small yellow flowers.
- They plant woad seeds in rows each spring.
Forms
woad · woads