Brobdingnag [ˈbrɒbdɪŋˌnæg] n. Often incorrectly Brobdignag.
1.) The name given by Jonathan Swift in Gulliver's Travels to an imaginary country where everything is on a gigantic scale. Hence used attributively as: Of, or pertaining to, that country; of huge dimensions; immense; gigantic (O.E.D. 2nd Ed.).
"Huge untutored Brobdignag genius,needing only to be tamed down; into Shakspeares, Dantes, Goethes! It is all gone now, that old Norse work,Thor the Thunder-god changed into Jack the Giant-killer: but the mind that made it is here yet" (On Heroes, Hero-Worship, and the Heroic in History, Thomas Carlyle, 1841).