te.ˈträbəl, -rōb- noun
also te·trob·o·lon -räbələn
( plural tetrobols -bəlz ; also tetrobo·la -bələ)
Etymology: Greek tetrōbolon from neuter of tetrōbolos of four obols, from tetra- + obolos obol — more at obol
: a silver coin of ancient Greece worth four obols