Origin of ChildermasMiddle English childermasse from Old English cildramæsse from cildra, of infants (see child) + mæsse, Mass
- a day to commemorate the killing of the Holy Innocents. Variously held on 28th December in the Western Church and 29th December in the Eastern Church. In Spanish speaking countries this is often a prank filled day like April Fools' Day.
childer (“children”) + -mas