Euphony 

Used to describe a pro gamer, usually with rpg games.

Dude that guy is Euphony

Euphony by Steven High October 14, 2008

Euphonium

A mysterious instruments played by the select few. It is the most important instrument of the low brass. The players get sick and tired of people asking what a Euphonium is, and most likely didn't tell you. That is why you are on Urban Dictionary.

Guy 1: What's a Euphonium?
Euphonium Player: *face palm*

Euphonium by A Euph Player March 11, 2011

euphonium player 

A very talented sexy musican who is a natural born kisser

That euphonium player is a sexy beast

euphonium player by talented man September 12, 2015

euphonium

a low brass instrument with 3 or 4 valves that can be played in treble or bass clef. hardly anybody knows what it is so euphonium players often get tired of explaining it. they are usually the least ignorant section in low brass and the smallest and most talented section in the band.

band director: can someone please explain the coda to the trombones!?
euphonium section: we can! we can!

euphonium by honorband71 July 7, 2010

euphonium

n. a large 3- or 4-valved brass instrument resembling a small tuba; it is similar to the baritone horn but, while the baritone has a cylindrical (straight) bore, the euphonium has a conical (grows larger as it progresses towards the bell) bore, warming up the sound

The euphonium has a dark, rich sound--except when too much garbage has been dropped down the bell.

euphonium by Civil Twilight 646 July 21, 2003

euphonabonatones

Slang for a low brass section, usually of a marching band. Named after the euphoniums, trombones and baritones. Characterized as being very obnoxious and rebellious, yet just funny or likable enough to somehow get away with it...usually. Both hated and loved by members of the rest of the band.

Euphonabonatones, assemble!!
"Where are the euphonabonatones?" "I dunno, probably off harrassing the clarinets. They say they're 'bonding'."
While other sections were practicing the opener (like they should), the euphonabonatones were too busy marching in the shape of a dick.

euphonabonatones by BrassCole July 15, 2009

Euphoner 

A mixture of happiness while having a boner

I had a euphoner as a saw the playboy model walk by

Euphoner by Marquandala April 30, 2009