the Ceremony of the Keys
/ðə ˌserəməni əv ðə ˈkiːz/
/ðə ˌserəməʊni əv ðə ˈkiːz/
- a ceremony that takes place at 10 p.m. every night at the Tower of London, when a beefeater closes the gates, exchanges secret passwords with a guard, and gives him the keys.
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the Ceremony of the Keys