Voilà l’homme dont elle est coiffée = There is the man with whom she is smitten.
Être né coiffé = To be born with a silver spoon in one’s mouth (literally, with a caul).
Coiffer sainte Catherine = To remain an old maid.
Coin
Cet homme mourra au coin d’un bois (or, d’une haie) = That man will die in a ditch.
Collier
Il est franc du collier = (of a horse) He pulls freely; (of a man) He never shirks his work.
Reprendre le collier de misère = To return to drudgery, to the old routine.
Comble
Le feu détruisit le bâtiment de fond en comble = The fire completely gutted the building.