- (n.) An herbaceous cruciferous plant (Isatis tinctoria). It was formerly cultivated for the blue coloring matter derived from its leaves.
- (n.) A blue dyestuff or coloring matter, consisting of the powdered and fermented leaves of the Isatis tinctoria. It is now superseded by indigo, but is somewhat used with indigo as a ferment in dyeing.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). woad. Retrieved September 21, 2026, from http://smartdefine.org/woad/definitions/2082359 |
| Chicago | Webster's. 2011. "woad" http://smartdefine.org/woad/definitions/2082359 (accessed September 21, 2026). |
| Harvard | Webster's 2011, woad, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/woad/definitions/2082359>. |
| MLA | Webster's. "woad" 28 May 2011. Web. 21 September 2026. <http://smartdefine.org/woad/definitions/2082359> |