beachhead

[ beech-hed ]
/ ˈbitʃˌhɛd /

noun

the area that is the first objective of a military force landing on an enemy shore.
a secure initial position that has been gained and can be used for further advancement; foothold: The company has won a beachhead in the personal computer market.

Origin of beachhead

First recorded in 1935–40; beach + head
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for beachhead

beachhead

/ (ˈbiːtʃˌhɛd) /

noun military

an area on a beach that has been captured from the enemy and on which troops and equipment are landed
the object of an amphibious operation

Word Origin for beachhead

C20: modelled on bridgehead
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012