fool's gold
noun
iron or copper pyrites, sometimes mistaken for gold.
Origin of fool's gold
An Americanism dating back to 1870–75
Words nearby fool's gold
fool around,
fool away,
fool hen,
fool's cap,
fool's errand,
fool's gold,
fool's mate,
fool's paradise,
fool's-parsley,
foolery,
foolfish
British Dictionary definitions for fool's gold
fool's gold
noun
any of various yellow minerals, esp pyrite or chalcopyrite, that can be mistaken for gold
Scientific definitions for fool's gold
fool's gold
[ fōōlz ]
Any of several minerals, especially pyrite and chalcopyrite, sometimes mistaken for gold.