Gaude (n.) - dyer's greenweed, producing a green dye.
And undernethe hir feet she hadde a moone, --
Wexynge it was and sholde wanye soone.
In gaude grene hir statue clothed was,
With bowe in honde, and arwes in a cas.
- Chaucer, Geoffrey: The Canterbury tales (1387-1394)
The Middle-English Word of the Day is selected from Mayhew and Skeat's
"Concise Dictionary of Middle English."
As found on Greg Lindahl's website
The example text was found at the Middle English Collection of the University of Virginia Library.