- 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.
- 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
1940, in reference to German military tactics in World War II, from beach (n.) + head (n.), on the model of bridgehead, but the image doesn’t quite work.