/lam"euhs/ , n.
1. 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 .
[ bef. 900; ME Lammesse, OE hlammaesse, hlafmaesse. See LOAF, -MAS ]