Il s’est jeté à corps perdu dans cette affaire = He threw himself headlong (or, with might and main) into the matter.
Je le saisis à bras le corps = I seized him round the waist (in a struggle).
Ils se sont battus corps à corps = They fought hand to hand.
Je l’ai fait à mon corps défendant = I did it reluctantly, in self-defence.
Prendre du corps = To get fat.
Il a l’âme chevillée dans le corps = He has as many lives as a cat.
*À corsaire, corsaire et demi = Set a thief to catch a thief.
[“Ars deluditur arte.”—Cato.
“A trompeur, trompeur et demy.”—Charles d’Orléans, Rondel, 46.]