Transferred use of the surname, in origin a Norman French occupational name (from traverser ‘to cross’) for someone who collected a toll from users of a bridge or a particular stretch of road. It is now widely used as a given name, especially in the United States.
Greek: from a personal name based on classical Greek lampros ‘brilliant’, ‘radiant’, ‘luminous’. This name is given to commemorate Easter, which is known colloquially as Lambri ‘the bright (day)’. This form may also represent a reduction of patronymics based on this personal name, such as Lambropoulos.