[OT] mystery character

[Mike Wright]

Hi all,

Since this list has got to have one of the most diverse user sets out 
there I thought to ask this here.

While watching a youtube presentation about CSS I came across a selector 
using a character that I don't recognize and can't copy/paste since it's 
in a video so I screenshotted it.

Here it is:  http://tinyurl.com/bp9crbnv

Anybody know what it is or what language it is from?

Thanks for any help,
Mike Wright