A metal that is liquid at room temperature. It is typically used in thermometers, barometers, and other measuring devices. Is toxic to humans because it causes permanent brain and nerve damage. Mercury is nicknamed "quicksilver" because it was once used to shine hats and shoes before people realized that it caused insanity (Mad Hatter anyone?).
James developed severe schizophrenia within two years of working at a mercury factory.
by AYB April 22, 2003
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1st planet from the sun. Hot on both sides. 2nd hottest planet(second to venus, the 2nd planet from the sun). its year is the shortest because it's path around the sun is shorter(you'd be like twice as old there). if you visited venus you'd die. you step on the ground and you burst into flame. just like arizona.
hi, i'm visiting mercury. i died 3 minutes before landing.
by Eins und Eins August 14, 2005
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1) The red stuff inside a thermometer.

2) The first planet from the sun

3) A car company

4) Acting like, portraying, or a person who is being like the late Queen lead singer Freddie Mercury.
1) Young Steve broke open the thermometer and tasted the red stuff inside, called mercury.

2) No humans can ever inhabit the planet Mercury, because one side of the planet is too hot, while the other side is too cold.

3) Mr. Poe recently bought a 1999 Mercury Villiager, because his 1988 Honda Accord exploded.

4) "John is being such a mercury today," remarked Joanne, "He is wearing a spandex jumpsuit for no reason and he keeps ending everything he says with "Darling" or "Dear"."
by kkkkkkkkkkkkkkk October 27, 2004
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When one testicle in a man's scrotum is very hot and the other is very cold, as if they are mimicking the two sides of the planer mercury.
John: Man, the pocket fan I had only blew as far as the right side of my body.
Jehoshaphat: Oh boy, that would be rough.
John: Yeah, it was a real mercury down there.
by Nbtful August 31, 2015
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For describing funny colour or consistensy semen
shoot your mercury all over my face
by baggypyjamas December 8, 2005
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1. Innermost planet in the solar system, and officially the smallest major planet since Pluto was demoted to the newly created category of dwarf planet in 2006. Diameter c. 3,050 miles. Large iron core, pitted surface, negligible atmosphere. Orbital period 88 days. Rotational period 59 days. Surface temperature ranges from minus 180 to plus 430 degrees Centigrade. No natural satellites. Gravity at surface about 38 percent of Earth gravity. Currently (in 2008) being mapped by the MESSENGER space probe.

2. The planet's namesake was the messenger god of ancient Rome, well known for his winged sandals and identified with intersex identity and hermaphroditism. Greek counterpart was Hermes.

3. Stage surname of lead singer Freddie of the rock group Queen. Born Farrokh Bulsara September 5th 1946, died of AIDS-related pneumonia on November 24th 1991. With his band provided much of the soundtrack for various movies, most notably Higlander. A real character.

4. Metallic chemical element, liquid at room temperature, density around 13.5 grammes per cubic centimetre (or times that of water), atomic number 80. Symbol Hg, from Latin Hydrargyrum, derived from Greek form meaning "water-silver". Toxic when ingested or vapours inhaled, affects nervous system, used in barometers, thermometers and numerous other applications.
Mercury has been visited by the spacecraft Mariner 10 and MESSENGER.

Please Mercury, may my courier reach Julius Octavius in time.

Freddie Mercury ROCKED.

Make sure you don't bite the thermometer too hard, or you'll get shards of glass in your mouth and a few drops of mercury down your throat.
by Fearman May 10, 2008
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