LAMMAS, a festival held on the first day of August. Some suppose it to have derived its name from the practice of bringing a live lamb on that day to high mass, but this seems a mere local custom peculiar to York. Others regard it as equivalent to loaf-mass, or harvest offering of bread from new corn. A balder meaning is attached to it

Lammer-
moor Hills
Lamp.

by Johnson, who makes it a corruption of Lattermath, or second-morning. The proverb "at latter Lammus," like the Roman ad Græcas calendas, is a euphemism for never.