a former festival in England, held on August 1, in which bread made from the first harvest of corn was blessed.
2.
a festival (Feast of St. Peter's Chains) observed by Roman Catholics on August 1, in memory of St. Peter's imprisonment and his miraculous deliverance.
Also called Lammas Day.
Origin: bef. 900; ME Lammesse, OE hlāmmæsse, hlāfmæsse.See loaf, -mas