1. (n.) An unproven, experimental or secret medicine or remedy\; a medicine, the ingredients of which are kept secret for the purpose of restricting the profits of sale to the inventor or proprietor; a quack medicine.

2. (n.) Any scheme or device proposed by a quack.

all-comprehending all-comprehensive all-covering all-embracing all-encompassing all-filling all-including all-inclusive all-pervading allover broad broad-gauged broad-minded catholicon comprehensive cosmic cosmopolitan country-wide cure-all eclectic ecumenic ecumenical ecumenistic elixir extensive galactic general generic global heaven-wide inclusive indeterminate international large-scale liberal national nondenominational noninsular nonsectarian nostrum planetary spacious of mind total unbigoted unfanatical unhidebound universal unparochial unprovincial wide wide-minded widespread world-wide worldwide