'Monday' definitions:
Definition of 'Monday'
(from WordNet)
noun
The second day of the week; the first working day [syn: Monday, Mon]
Definition of 'Monday'
From: GCIDE
- Monday \Mon"day\ (m[u^]n"d[asl]; 48), n. [OE. moneday, monenday, AS. m[=o]nandaeg, i.e., day of the moon, day sacred to the moon; akin to D. maandag, G. montag, OHG. m[=a]natag, Icel. m[=a]nadagr, Dan. mandag, Sw. m[*a]ndag. See Moon, and Day.] The second day of the week; the day following Sunday. [1913 Webster]