John' o'Groat's' House"
Pronunciation: (u-grōts'), [key]
the northern tip of Scotland, near Duncansby Head, NE Caithness, traditionally thought of as the northernmost point of Britain: from Land's End to John o'Groat's House. Also called John' o'Groat's'.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.