repère, point de repère → « The tower is a landmark visible for miles → Big Ben is one of London's most famous landmarks. » to be a landmark = faire date / époque → « The discovery of penicillin was a landmark in medicine. » (cf: milestone) qui fait jurisprudence → « The payout is believed to be a landmark case because it breaks the established principle that... → the landmark decision that prompted US deregulation. »