A part of the Mass, or, in Protestant churches, a part of thecommunion service, of which the first words in Latin are Sanctus,sanctus, sanctus [Holy, holy, holy]; -- called also Tersanctus.
In a direct translation from latin it means holy or whatev. however in a rough connotational translation it means something a little more like bad-ass, shit-stomper, roxxor of soxxorz, waffle stomper, etc.