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9.
a "legendary Canadian rock band", whose body of work includes such classics as:

-The Boys In The Bright White Sports Car
-General Hand Grenade
-Santa Maria
-We're Here For A Good Time (Not A Long Time); and
-Raise A Little Hell

Q: Didn't Trooper have a song that said something about a 'three dressed up as a nine'?

A: Yes, the did.
by Figleaf23 August 16, 2007
 
1.
Anyone who exhibits EXTREME perseverence, fortitude, and tenacity.
Rocky was the ultimate trooper
by trooper1 February 15, 2005
 
2.
a. Somebody who does something strenuous or tedious for a long period of time without complaining.

b. Somebody who overcomes a tough situation.
"Yeah, he was a trooper, man. He waited in line 4 hours to get tickets."

Or

Person 1: He's been in the hospital fighting cancer for a year now.

Person 2: What a trooper.
by E-Killa December 10, 2005
 
3.
Anyone who rises above and beyond the call of duty. See wounded soldier.
After the party, Bob waltzed around his humble abode, downing wounded soldiers like a trooper.
by A-row May 27, 2003
 
4.
Some one who is bold. Stand's up to danger with out any fear. So one tough. A person who is a one man army.
That person right there is a true Trooper.
by Anthony Felix January 14, 2009
 
5.
1) When three or more friends have a college lecture scheduled, and only one of them attends the class, that individual obtains the title "trooper."

2) An individual who, despite chronic marijuana usage, manages to maintain a high (no pun intended) level of achievement.
1) Guy 1: I'm skipping Pottery 105 today.
Guy 2: Yeah, I've got way too much to do, I'm out too.
Guy 3: I'm not skipping, it's fucking pottery.
(After Guy 3 leaves) Guy 1: He's a trooper.

2) Guy 1: So what'd you do after those blunts on Thursday?
Guy 2: Eh, I went to class, cleaned the house, did some homework, and got my taxes done.

Guy 1: Damn, you're a trooper.
by Bud HC April 22, 2010
 
6.
A person who is accepted within a group that willingly goes with the flow of the group even when the group's direction is difficult.
Dave is always down to do stuff and always has our backs when we need him. He's a trooper.
by lilkev727 February 21, 2008
 
7.
someone who courageously face harshness and unpleasant conditions to obtain a goal
Fred is a trooper he walked 2 miles in 2 feet of snow to get home.
by Gerard Irick January 07, 2010