Definition of king-by-your-leave in US English:

king-by-your-leave

noun

historical
  • A game resembling hide-and-seek, in which all players hide apart from one (usually blindfolded) seeker and the first player to return undetected to the base is seeker next time.

Origin

Late 16th century; earliest use found in John Higgins (b. c1544), poet and linguist. From king + by your leave.