Synonyms for C-note:

n.

buck, fin, five, five-spot, fiver, grand, greenback, the gray dollar, the grey pound. c-note (noun)
hundred dollar bill.
possession (noun)
hundred dollar bill.

Other synonyms:

five-spot, fiver, greenback. five. fin. buck, grand. Other relevant words:
buck, fin, five, fiver, grand, greenback.