from the GNU version of the Collaborative International Dictionary of English
- n. The act of closing the doors of a schoolroom against a schoolmaster; -- a boyish mode of rebellion in schools.
from The Century Dictionary and Cyclopedia
- n. Exclusion from a place by means of locks or bars; specifically, the act of excluding a schoolmaster from school by barricading the doors and windows: a boyish sport indulged in at Christmas in Great Britain, now nearly obsolete, and sometimes practised for mischief in parts of the United States.
Sorry, no etymologies found.