Saint Monday.
See saint.
·noun The second day of the week; the day following Sunday. ...
Webster's Dictionary of the English Language
·- The first Monday after the holidays; — so called by English schoolboys. II. Black Monday ·- Eas...
The first Monday after the school-boys holidays, or breaking up, when they are to go to school, and ...
Dictionary of The Vulgar Tongue by Francis Grose
A holiday most religiously observed by journeymen shoemakers, and other inferior mechanics. a profan...