Vernicle (n.) - a copy of the handkerchief of St. Veronica (the traditional name of the woman who wiped the Saviour's face).
An hundred of ampulles on his hat seten,
Signes of Synay and shelles of Galice,
And many a crouch on his cloke, and keyes of Rome,
And the vernicle bifore, for men sholde knowe
And se bi hise signes whom he sought hadde.
- Langland, William: The vision of Piers Plowman (1377-1379)
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.