noun U.S. History.
Examples from the Web for muster day
And now comes dinner,—a most important feature of muster-day.
Another great day in the colonies was muster-day when the militia came together for drill.The Historical Child|Oscar Chrisman
Quarterly training or muster-day became an occasion more noted for the rum then consumed than for the drilling done.The Old First Massachusetts Coast Artillery in War and Peace|Frederick Morse Cutler
It is Sunday, and muster-day, and the Alabama has once more been put in perfect order.Memoirs of Service Afloat, During the War Between the States|Raphael Semmes
A very different affair is the "muster-day" of the early fall, before the cold days and nights have come to stay.