Siberius 

Greatest bloody name in history

Guy: Siberius Miyazawa is a bloody lad

Siberius by ben the lad November 16, 2016

Sibelius 

1) The most prominent (And just about only) Finnish composer. Lived from the late nineteenth century well into the middle of the twentieth. Famous for his seven symphonies, particularly the second and the fifth. Also produced such well known classical pieces as 'Finlandia', Finland's unofficial anthem, Valse Triste', his Violin Concerto, and his choral symphony 'Kullervo'. Although he lived up to 1952, he did not compose any new pieces after approximately 1920.

2) A music notation program known among the musical community for being annoyingly overpriced and very useful at the same time.

Sibelius is the only composer I know who can write music that reduces an entire audience to tears with his music (well, rappers can, but in a different way)

Sibelius by Lemminkainen September 6, 2010

Siberious

A word that replaces "Serious". Often used when a situation is completely ridiculous.

ARE YOU FREAKIN SIBERIOUS RIGHT NOW?

Siberious by Do It Big March 13, 2009

Sibericuse 

Slang for the city of Syracuse, NY where snow is present for most of the year.

What's the weather like in Sibericuse?

Sibericuse by Aquinox February 12, 2009

Sibelius 

a computer program that music teachers use to cheat

Student #1: Can you make me a CD of my vocal part?
Teacher: Sure, I just have to download Sibelius.

Sibelius by Patrick0124578 March 9, 2009