плацда́рм — meaning in English

platsdarm

English meaning

beachhead noun A secured area on an enemy shoreline used to bring in more troops and supplies during an invasion.
bridgehead noun The area of land next to one end of a bridge.
foothold noun A secure place to put one's foot when climbing.
springboard noun A flexible board used to launch a diver or gymnast into the air.

плацда́рм is used for these senses in English:

beachhead (military) An area of hostile territory (especially on a beach) that, when captured, serves for the continuous landing (or movement into position) of further troops and material
bridgehead (military) An area of ground on the enemy's side of a river or other obstacle, especially one that needs to be taken and defended in order to secure an advance.
bridgehead (physical chemistry) Either of the two atoms in different parts of a molecule that are connected by a bridge of two or more other atoms
foothold (military) Airhead, beachhead, bridgehead, lodgement.
parade ground (military) A large area of firm ground, formerly usually adjacent to fortifications and now usually a paved area at a military base, where soldiers present themselves for inspection ("parade") and practice marching and close-order drills.
springboard (figuratively) Something that acts as a catalyst to begin or accelerate an action or growth.
stepping stone (idiomatic) Something used as a way to progress to something or somewhere else.

noun A secured area on an enemy shoreline used to bring in more troops and supplies during an invasion.
noun An initial foothold or early success that makes further progress possible.

noun The area of land next to one end of a bridge.
noun A defensive structure built to protect the end of a bridge.
noun (military) A position that an army captures and holds on enemy territory, usually beside a river, so more troops can move in safely.
noun (chemistry) Either of two atoms in a molecule that are joined to each other by a chain of other atoms forming a bridge.