half a C noun fifty dollars US A shortened allusion to $100 as a “C-note”.
Look my man, when you was in my town, you ate free at my joint, misused my hospitality and left town owing my “Mom” fifty dollars. You don’t have to have a drink with me, but I’ll take the “half a C” for Moms. — Babs Gonzales, IPaidMyDues, p. 88, 1967