a grouping of French film directors in the late 1950s and 1960s who reacted against established French cinema and sought to make more individualistic and stylistically innovative films. Exponents included Claude Chabrol, Jean-Luc Godard, Alain Resnais, and François Truffaut.
French, literally 'new wave'
nouvelle vague in other Oxford dictionaries
Definition of nouvelle vague in the US English dictionary