noun
or pie·fort pē|ā|fȯ(ə)r, (ˈ)pyā-
( -s )
Etymology: French pied-fort, from pied foot (from Latin ped-, pes ) + fort strong, from Latin fortis — more at foot , fort
: a coin struck on an unusually thick flan (as some pattern pieces and multiple coins of France, Bohemia, and the Low Countries)