1) Imaginary place 2) Land of the giants 3) Mythical place 
Brobdingnag is a fictional land in Jonathan Swift`s satirical novel Gulliver`s Travels occupied by giants. Lemuel Gulliver visits the land after the ship on which he is travelling is blown off course and he is separated from a party exploring the unknown land. The adjective Brobdingnagian has come to describe anything of colossal size. ==Locatio.....
noun a land imagined by Jonathan Swift where everything was enormous
the region in Swift's Gulliver's Travels where everything was of enormous size.