C’est le cadet de mes soucis = That is the least of my cares; That is the last thing I worry about.
Cadran
Il a fait le tour du cadran = 1. He has slept the clock round. 2. He has worked for twelve hours at a stretch.
Cage
*La belle cage ne nourrit pas l’oiseau = Fine clothes do not fill the stomach.
Caisse
Il tient la caisse = (lit.) He keeps the cash account; (fig.) He holds the purse-strings.
Il fait la caisse = He is making up his cash account.
Quel est l’état de votre caisse? = How much cash have you in hand?
Cale