mercury
/ˈmər-kyə-rē/
noun
a Roman god of commerce, eloquence, travel, cunning, and theft who serves as messenger to the other gods
a bearer of messages or news or a conductor of travelers
a silver-white poisonous heavy metallic element that is liquid at ordinary temperatures and is used especially in batteries, in dental amalgam, and in scientific instruments —called also quicksilver
noun
a chloride of mercury: such as
calomel
mercuric chloride
noun
an electric lamp in which the discharge takes place through mercury vapor —called also mercury lamp