Pronunciation: (klāt'n bool'wur), [key]
an agreement between the U.S. and Great Britain in 1850 guaranteeing that any canal built to connect the Atlantic and Pacific across Central America would be jointly controlled, open to all nations, and unfortified. Cf. Hay-Pauncefote Treaty.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.