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1.
An archaic term for the element mercury - a heavy silver-white poisonous metallic element that is liquid at ordinary temperatures and is used especially in scientific instruments.
Check what the temperature is with this old quicksilver thermometer.
by Aaron Brown January 29, 2005
73 14
 
2.
A game that features a bunch of dudes jerking off around a pizza. The last guy to squirt his manjuices has to eat the pizza.
"Bruce and Lance came over to play quicksilver with the boys from the club and now I have an upset stomach"
by crashngdog May 11, 2006
67 48
 
3.
A character from a famous cartoon. You can refer this word to something very fast.
He was like Quicksilver when he ran down the mountain.
by Choonmann Sung January 08, 2005
25 9
 
4.
The code name of a mutant - Pietro Maximoff - from the X-Men Comic Books and TV Shows. Mutant power of super speed.

The sexiest cartoon character alive.
Quicksilver first appeared in the Evo episode "Speed & Spyke".
by Flower April 17, 2004
25 13
 
5.
Basically Roxy for guys :D
"Hey Kyle what brand is your jacket?"
"Quicksilver"
..."oh...roxy for guys"
by tbear654 April 30, 2007
28 23
 
6.
The Most amazing horse in the World, Quicksilver is a dapple grey who can jump the moon. Is the most gorgeus mover you have ever seen!! Everyone wants to own a pony/horse that looks like Quicksilver.
" did you see that new pony in the hunters??"

"yeah! want his name Quicksilver?"
by anonomyessss February 02, 2010
3 5
 
7.
Code name for the second generation Power Macintosh G4 case design.
I have a dual 800 quicksilver that's starting to feel slow.
by Chris Tipton-King July 18, 2005
5 8