n.
Pronunciation: ' la-m ə s
Function: noun
Etymology: Middle English Lammasse, from Old English hl ā fmæsse, from hl ā f loaf, bread + mæsse mass; from the fact that formerly loaves from the first ripe grain were consecrated on this day
Date: before 12th century
1 : August 1 orig. celebrated in England as a harvest festival ― called also Lammas Day
2 : the time of the year around Lammas Day