saint des saintscommon nounproper nounEtymologyexpandcalque from Latin sanctum sanctorum, sanctum meaning 'sanctuary'.Definitions1. The innermost and most sacred part of the tabernacle, and later of Solomon's Temple, where the ark was kept.religionexpand2. A place of sacred importance.by extensionexpandLa famille, cellule sociale, repose toute sur le roc stérile du patrimoine. Le coffre-fort, voilà le Saint des Saints.Synonymnaos