Question for audio guys, timbre
 

I'm taking a class on music/audio. Doing a presentation on the properties of sound and am having troubles with "timbre."

I'm looking for a very clear definition as to what timbre is. I have a general idea, but when I find myself explaining it, it's very sloppy and I'm not entirely sure if it's correct. From what I understand, timbre is basically a collection of frequencies that represent a given sound. For example, you pluck a string on a guitar and it does not omit one frequency, it omits a full timbre of sound.

:stoned

ADG

I looked around and I'm guessing you checked this out already, but this is probably the best explanation:

http://en.wikipedia.org/wiki/Timbre

Man those are pretty bad,
what I was taught;

Think of two people singing the same note, it is the same note but the do not sound exactly the same

a cello and a piano can play the same note as well,
but you know one is a cello and one is a piano.

so think of two different instruments playing the same note,
the unique sound of each, or the difference between the two is timbre

Many choose, but few are chosen