Octothorp

#The lid of my snapple tells me that an octothorp is another name for the pound / number / hash sign... the # symbol. Quite a familiar glyph for CF developers.

According to Octothorp press, the word is so obscure that it isn't even in the Oxford English Dictionary. Its also not currently found in the Wikipedia (or my spell checker).

I suppose the Octo prefix is because it has eight points.