Definition of imperial crown
1
: a crown emblematic of independent sovereignty: such as
a
: the crown in the royal regalia of England that is used for the crowning in the coronation ceremony, that consists of a circlet of gold heightened with four crosses formée alternately with four fleurs-de-lis and has two arches rising from the crosses and surmounted by a mound and a cross formée, and that is ornamented with precious stones
— called also Saint Edward's crown
b
: the crown of an emperor or of an empire
2
: a conventionalized representation of an imperial crown
especially
: a figure of a crown in the style of the imperial crown of England often used as an emblem of the sovereignty of the British monarch or as a heraldic bearing
3
: imperial state crown