Monday

Chamber's Twientieth Century Dictionary · 1908 · p. 66

mun′dā, n. the second day of the week.— adj. Mon′dayish , fagged—of preachers, after their Sunday exercitations.— Black Monday , Easter Monday, the 14th of April 1360: any Easter Monday; Handsel Monday , the first Monday of the year, when presents are given. [A.S. mónandæg , mónan , gen. of móna , moon, dæg , day.]