From Longman Dictionary of Contemporary Englishbeachheadbeach‧head /ˈbiːtʃhed/ noun [countable] PMan area of shore that has been taken from an enemy by force, and from which the army can prepare to attack a country
Examples from the Corpus
beachhead• Westerners call what they have established out here a civilization, but it would be more accurate to call it a beachhead.• But music, not words, was the cultural beachhead of the new invasion.• Many journeys of pilgrimage are made to the invasion beachheads.• In support of the build-up of beachheads, naval ships, directed by observers ashore with assault forces, fired on shore targets.• In 1976 the counterculture still had a solid beachhead in Athens, Ohio.• What they seem not to understand is how difficult it will be just to hang on to the beachhead they have made.From Longman Business Dictionarybeachheadbeach‧head /ˈbiːtʃhed/ noun [countable]COMMERCE part of a market that a company obtains, hoping to obtain more of the same market or part of another larger market that is near the first oneTelefonica gained a key beachhead in Brazil when it won control of CRT. 