Norm,
I didn't give your the etymology, the French for wedge is a coin, " n. m. instrument de forme prismatique (en bois, en métal) pour fondre des matériaux, serrer et assujettir certain choses."
In this case, the coin refers to the object and not it's action!
Eh beh, "je te bouche un coin la mon pote"!
A plus, Matthew