Определение changing of the guard в Английский Язык Английский Язык словарь
Any situation in which an individual or group charged with a task or responsibilities in an organization is replaced by another individual or group
NBC has set a date for the changing of the guard at The Tonight Show. After 17 years, Jay Leno will sign off as host of the venerated late-night talker.
A ceremony during which the soldiers or other officials guarding a major government building or state residence, especially Buckingham Place in England, are replaced by a new shift
a ceremony that takes place regularly outside Buckingham Palace in London, in which the soldiers who have been guarding the palace are replaced by others