n. (pl. sanctums)
1. a holy place.
2 colloq. a person's private room, study, or den.
Phrases and idioms:
sanctum sanctorum
1. the holy of holies in the Jewish temple.
2 sense 2 of n.
3 an inner retreat.
4 an esoteric doctrine etc.
Etymology: L, neut. of sanctus holy, past part. of sancire consecrate: sanctorum genit. pl. in transl. of Heb. kodes hakk° das{icirc}m holy of holies