The Queen’s I

Wiktionary Word definitions in Wiktionary
n. The first-person plural pronoun ''we'' as traditionally used by a sovereign in formal speech to refer to himself (herself) in their role as the monarch.

Wikipedia Word definitions in Wikipedia
The royal "we" , or majestic plural ( pluralis majestatis in Latin , literally, "the plural of majesty"), is the use of a plural pronoun to refer to a single person holding a high office, such as a sovereign (e.g., a monarch or sultan ) or religious leader ...