The act of spending every waking moment thinking of someone you know you can't have, so named for Tuomas Holopainen of Nightwish and his unrequited love for Tarja Turunen. Also because you're "wishing at night" for them.
A: "He still hasn't found a girlfriend yet?"

B: "Nah, he's still Nightwishing for his high school crush"
by kolokol-1 January 17, 2019
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A great symphonic metal band, alas doomed to falure after Tarja Turunen's quittal.

Don't get me wrong, the other players are really good musicians, and had it been any other band (especially with a male singer) they could have lived on with a replacement, but Tarja, in large part due to her being a quite good looking female and having a quite unique voice in the metal arena, was literaly the face and signature of Nightwish, carrying Nightwish's public profile higher than everyone else put together. Without her, the others are a bunch of great musicians, but they are not Nightwish anymore.
Q: What do you get when you separate Nightwish and Tarja?
A: Tarja.
by Elvarg June 5, 2006
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The worst band in the world, with an equally sucky vocalist who tries to sing opera, but truly can't. Nightwish is a picture-child for all that's wrong with the music industry.
Kid 1: Let's listen to Nightwish!
Kid 2: No, man, they suck, big, hairy, donkey balls.
Kid 3: Dude, they really do. That cunt can't sing.
Kid 2: Let's burn his Nightwish CDs and rid the world of his horrible, horrible music collection.
by Nightwish SUCKS April 8, 2006
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Music to play Dungeons & Dragons by rather than getting laid.
A: I love Nightwish so much.
B: Yeah, I'd much rather sit here with you, man and play D&D while listening to Nightwish than get laid anyday.
A: Good thing because girls don't fuck guys who like Nightwish anyway!
by Inked Jewell January 31, 2009
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A terrible motion picture made in the mid 90's starring Treet Williams and Steven Segal.
by Gleg October 23, 2002
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Superhero Vixen with glowing eyes and a killer bod that kicks ass; caries a gun and blade.
Wow! Did you see Nightwish kick Dozer's ass?! That was so expected
by Nici March 28, 2005
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1. A band that nerds listen to in their Saturns as they get pumped up on the way to their RolePlayingGame Conventions dressed as Cloud from Final Fantasy 7.

2. Music that nerds listen to when they have played out all of their Anime soundtracks.

3. Music that the hardest Mofo at the Renaissance Fair blares with the Saturn doors open as he sets up tents.

4. Euro-trash
1. NERD1: "Dude, your tail is caught in the Saturn's door."
NERD2: "Oh man! Now its ruined and I won't win!"
NERD1: "It's okay man, lets listen to NIGHTWISH!"
NERD2: "YEESSSSSSSSSS!" (Pumping his fist)
2. "I'm tired of listening to the Dragon Ball Z soundtrack, how about some NIGHTWISH?"
3. "I totally dig Nightwish! I listen to it when I practice my SWORDPLAY!"
4. "Hello. Do you like my mullet and my jean jacket? My favorite band is Nightwish."
by SLEDGBRAINERD! November 2, 2005
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