a fortification built before World War II to protect France's eastern border; initially considered to be impregnable, it was easily overrun by the German army in 1940
(maritime law) a fraudulent breach of duty by the master of a ship that injures the owner of the ship or its cargo; includes every breach of trust such as stealing or sinking or deserting the ship or embezzling the cargo
(law) the replacement of one obligation by another by mutual agreement of both parties; usually the replacement of one of the original parties to a contract with the consent of the remaining party