1) A soldier from Star Wars. This type of soldier wore white armor vaguely reminiscent of the human skeleton. The Stormtroopers had many different versions of armor, ranging from forest troopers to desert troopers. The Stormtroopers were commanded by the evil Empire.

It is rumored that all Stormtroopers are clones, remnants of the great Clone Wars.

2) Stormtroopers are considered, within the storyline of the movies and other fan works, to be extremely precise when shooting. This theory is disproven to the audience /many/ times over. The characters never seem to figure it out, though.
1) Random Stormtrooper picks up a part, and holds it up for his commander to see. "*click* Look sir. Droids. *click*"

2) Obi-Wan, pointing at a blasted hull of a transport: "Only Imperial Stormtroopers are so precise"
by Ashburnem November 22, 2003
Were what the Germans called the Canadian army Shock Troopers. No one is 100% sure why the Germans called these Canadians Stormtroopers. However it is believed because the Canadian troops were known for Hitting Hard and Precise.

This is also supported by the fact that the Canadian troopers found a way through the German Gasses ("Kept pushing on").

The Germans later used the name "Stormtrooper" for their own Elite soldiers in WW2.
In WW1 the Canadians were known as "Stormtroopers of the British Empire".
by A_Godly_Canuck January 3, 2012
A soldier from starwars who couldn't hit a target if it was 55 feet hight and half a mile wide!!!, Some how always loses to rebels.
It was thirty stormtroopers vs. a guy holding a giant glowstick. Come on.
by SKFD68 July 18, 2008
There are two different kinds of Stormtroopers. The most popular definition of a Stormtrooper is the soldiers that fight for the Empire, seen in the Star Wars movies. The Real Life Stormtroopers existed around the World War II era. A Stormtrooper was a member of the Nazi Militia, noted for brutality and violence. The Word "Stormtrooper" comes from the German words "Storm"(division) and "Truppen"(troops)
1. Its The Rebels! Shoot Them! (misses horribly)

2. Zeig Heil! Feindlich! Jagen Sie! (misses horribly)
by Hee Hee Hee June 29, 2005
A person who does not know how to aim and shoot properly in a first-person shooter video game
We lost because of all the stormtroopers on our team
by The Mi Goreng of Life April 11, 2016
(n.) Someone that wears black shoes with white socks or vice versa. Commonly used slang in sports (i.e. lacrosse or football).
Player 1: "Those new all black unis are tough!"

Player 2: "Yeah but look at the stormtrooper in the white socks..."
by namyrrepa August 10, 2018
When ones aim sucks so bad that they're classified as a stormtrooper
Michal-"dies after missing all of his shots"

Me-"you're a stormtrooper.
by CanYouLikeNotPlease March 31, 2022