USHER

in [phrasal verb] [M] - to mark the beginning of (something), or to cause (something) to existYesterday's match between Arsenal and Spurs ushered in the start of the new football season.They threw a huge party to usher in (= celebrate) the New Year.The legislation should usher in a host of new opportunities for school leavers.The 1929 crash of the American stock market ushered in the Great Depression.