adjective: (UK) Of or pertaining to the (historical) Tory, and now the Conservative, political party; hence, steadfastly conservative.
adjective: (Scotland, historical) Of or pertaining to the Scottish Presbyterian or Whig political party in the 17th century; hence, steadfastly Presbyterian.
adjective: Representing the true essence of something; authentic, genuine, honest.
adjective: (specifically, Australia, informal) Representing authentic Australian culture, values, etc.
adjective: (UK) Aristocratic by birth.
adjective: Used other than figuratively or idiomatically: see true, blue.
noun: (countable) A faithful partisan or supporter of a cause, person, political party, etc.
noun: (uncountable, historical) A blue dye from Coventry, England, famous for not washing out.
noun: (color models and color spaces) A precisely defined pure blue, as for example web color #0000FF = RGB(0,0,255).