halidom
Holiness; sanctity; sacred honour.
obsolete
Now sure and by my hallidome ( quoth he ) / Ye a great master are in your degree
A sanctuary; lands held of a religious foundation.
archaic
[…] save for Wodan, who had a richly bedecked halidom nearby.
Something regarded as sacred; a holy relic.
archaic
“By my halidom,” said he, “we have forgotten, Sir Prior, to name the fair Sovereign of Love and of Beauty, by whose white hand the palm is to be distributed.”
Where it comes from
From Middle English halidom, haliȝdom, from Old English hāliġdōm (“holiness, righteousness, sanctity; holy place, sanctuary, chapel; relics, holy things; holy office; sacrament; holy doctrines”), corresponding to holy + -dom, from Proto-Germanic *hailagadōmaz. Cognate with Dutch heiligdom (“sanctuary, shrine”), German Heiligtum (“sanctuary, shrine, holy relic”), Swedish helgedom (“shrine, sanctuary, temple, sanctum”), Icelandic helgidómur (“sanctuary, holy relic”).
Adapted from the Wiktionary entry halidom (CC BY-SA 4.0).