The country of gigantic giants, to whom Gulliver was a pigmy “not half so big as a round little worm plucked from the lazy finger of a maid.”
You high church steeple, you gawky stag, Your husband must come from Brobdingnag.
Kane O'Hara: Midas.
“Limbs of Brobdingnagian proportions.” —The Star.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894