Hal"i*dom (?), n. [AS. haligdm holiness, sacrament, sanctuary, relics; halig holy + -dm, E. -dom. See Holy.]
1.
Holiness; sanctity; sacred oath; sacred things; sanctuary; -- used chiefly in oaths.
[Archaic]
So God me help and halidom.
Piers Plowman.
By my halidom, I was fast asleep.
Shak.
2.
Holy doom; the Last Day.
[R.]
Shipley.
© Webster 1913.