1A state of harmony among all creatures, originally and especially as prophesied in Isaiah 11:1–9; a realization of this, as posited in utopian theologies such as that of the Religious Society of Friends (Quakers). Also (chiefly US) in extended use.
2(A name for) Canada.
Originally with reference to Northrop Frye's discussion of the painting The Peaceable Kingdom by Edward Hicks (1780–1849), an American member of the Religious Society of Friends (Quakers).
Early 17th century; earliest use found in The Holy Bible, conteyning the old testament and the new. From peaceable + kingdom.