Definition from Wiktionary, the free dictionary
"Toon" is Canadian slang for their two-dollar coin.
- Must be pretty rare usage. I've never heard it, and I live in Canada. Maybe some people use it as a short form of "Toonie", which came from the one dollar coin, which has been out a lot longer and because the early ones all had pictures of the loon on them, they got to be known as "loonies". So, naturally, later, when the two dollar bill was discontinued in favour of the two dollar coin, the two dollar coin became known as a "toonie" (even though it had pictures of one or more Polar Bears [] on the side opposite the image of the Queen of Canada []). Garth of the Forest (talk) 03:06, 27 September 2012 (UTC)