Definition of Charles's Wain in US English:

Charles's Wain

proper noun

British
archaic
  • The Big Dipper.

Origin

Old English Carles wægn ‘the wain of Carl (Charlemagne)’, perhaps because the star Arcturus was associated with King Arthur, with whom Charlemagne was connected in legend.

Pronunciation

Charles's Wain

/ˌCHärlzəz ˈwān/