Huff-Duff

[ huhf-duhf ]

noun

1. a method used by the Allies in World War II for locating enemy submarines and other naval or land targets through simultaneous bearings on their radio transmissions.

Word History and Origins

Origin of Huff-Duff¹

Vocalization of the abbreviation h.f.d.f. for high-frequency direction finder

Example Sentences

Its communications systems were supplying information to German submarines, and its American factories were assembling "Huff-Duff," the High Frequency Direction Finder used by the Allies to save their ships from German torpedoes.

From Time Magazine Archive