1. (noun) hypothetical substance that the alchemists believed to be capable of changing base metals into gold

• philosopher's stone
• philosophers' stone

1. (noun) a sweet flavored liquid (usually containing a small amount of alcohol) used in compounding medicines to be taken by mouth in order to mask an unpleasant taste

• liquid

2. (noun) hypothetical substance that the alchemists believed to be capable of changing base metals into gold

• substance

3. (noun) a substance believed to cure all ills

• catholicon
• cure-all
• nostrum
• panacea
• potion

1. (noun) a substance believed to cure all ills

• elixir of life