tough pitch
noun Metallurgy.
the state of refined copper when it is soft, malleable, and flexible: tough pitch copper.
Origin of tough pitch
First recorded in 1880–85
Words nearby tough pitch
tough,
tough break,
tough it out,
tough love,
tough nut,
tough pitch,
tough row to hoe,
tough sledding,
tough-minded,
toughen,
toughie