Hal"i*dom (?), n. [AS. haligdm holiness, sacrament, sanctuary, relics; halig holy + -dm, E. -dom. See Holy.]
Holiness; sanctity; sacred oath; sacred things; sanctuary; -- used chiefly in oaths.
So God me help and halidom.
By my halidom, I was fast asleep.
Holy doom; the Last Day.
© Webster 1913.