The Canadian
Aureate $1 coin, so named because of the Common Loon engraved on the reverse side (not, as sometimes reported, because of the portrait of
Queen Elizabeth II on the
obverse).
The use of the word "Looney" to refer to the dollar coin is quite prevalent in Canada. Canadian dollar stores are quite often called Looney-Twoney stores, for example.
You can't use Looneys to pay
bridge tolls in
the U.S., more's the
pity