/ Dictionary / Index L Lammas: Meaning and Definition of Find definitions for: Lam•mas Pronunciation: (lam'us), [key] — n. a former festival in England, held on August 1, in which bread made from the first harvest of corn was blessed. a festivalobserved by Roman Catholics on August 1, in memory of St. Peter's imprisonment and his miraculous deliverance. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lammas (Thesaurus) lamium Lammastide Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language