look up any word, like cleveland steamer:
 
3.
In the ancient Chozo language Metroid means 'Great Warrior'. The Metroid species were named so because of their ability to fight the parasite X. Technically, since Samus Aran is capable of defeating the Metroid species and Parasite X, she is a 'metroid'.
Jeezus, I'm gonna get laughed at and lynched for actually knowing what Metroid means. I am SUCH a nerd.
by JoetheArachnid February 16, 2009
 
1.
1: an AWESOME game serial by nintendo featuring the bounty hunter Samus Aran, the first female videogame hero.

2: A creature in the afore mentioned game. THese creatures express predetory and parasitic tendancies in that they latch on to their victims with their large mandibles and syphon the life-force out of them, leaving the victim dead and the metroid larger. They are green with a gelatinous but tough exterior shell containing 4 nucliei. They where created by the Chozo to keep the X-parasites on planet SR388 in check. In metroid they can only be killed by freezing them then shooting 5 missiles at them.
1: Metroid is a freaking awesome game!!!

2: RUN! METROIDS!!!!
by Jim October 02, 2005
 
2.
Parasitic lifeform that leeches onto it's host and drains the life of said host. Found on the planet SR-388.
The metroid attached to my sac and now I'm sterile.
by Hackfest May 23, 2005
 
4.
Adj; A situation that presents a person with many difficulties usually involving a hard to find object, solution, or path.
Party 1: Wow. That was hard.

Party 2: Yea. That was pretty metroid.
by Trav Mob November 17, 2009
 
5.
a female who sucks the life from a male, specifically while dating; succubus
1:"Where's Bob?"
2:"With his girlfriend"
1:"Does he ever hang out with the guys anymore?"
2:"No dude, she's a metroid"
by DJ Callit October 06, 2005
 
6.
A game series that got stupid once it's creator got hit by a car... The Game bases around female bounty hunter Samus Aran. Which makes male players more intrested in seeing her face then anything else.

The point of almost every game is to erdicate little bug things called Metroids, which in my opinion look like bubbles with red balls, and teeth. Also fighting these half monster half cyborg aliens called, 'Space pirates..' Metroid will never get as popular as Castlevania mainly because there are only 8 games released all together.

The dumb ass fan games like MP2D don't count. However now the Metroid community is infested with nobody's that spend their time sequnce breaking the games with gameshark codes... Sadly Metroid will never amount to anything lets hope the manga is good...
"hey I finnaly beat Metroid Prime in 1 hour!!"

"Yeah and now the world is a better place? i think not get a life..."
by Timecop May 31, 2005
 
7.
a noob who thinks he / she is cool.

in reality, he / she is a nerd.
<person a> : i am soo uber cool. cool like ice!
<person b> : you're such a metroid.
by silver_ October 02, 2006