coram domino rege (L.), before our lord the king.
coram nobis (L.), before us, in our presence.
coram populo (L.), in the presence of the public.
cordon sanitaire (Fr.), a sanitary cordon, a line of sentries posted so as to keep contagious disease within a certain area.
corpus delicti (L.), the substance of the offence.
corpus juris canonici (L.), body of the canon law; corpus juris civilis (L.), body of the civil law.
corruptio optimi pessima (L.), the corruption of the best is the worst of all.
corsetière (Fr.), a maker of corsets.
cosi fan tutte (It.), so do they all: they're all like that [of women].
côtelette (Fr.), a cutlet, a chop.