noun. an alloy based on tungsten with cobalt or nickel as a binder; used in making metal-cutting tools

"As material for the high-pressure vessel in the range from 50,000 to 100,000 kg/cm2, Bridgman used the extremely hard tungsten carbide, or, as it is called, carboloy, which is subject to the least possible deformation."

alloy  metal  

carbolic  carboxy  carboy