bridgehead
Pronunciation:
/ˈbɹɪdʒhɛd/noun
Definitions
An area around the end of a bridge.
A fortification around the end of a bridge.
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.
Either of the two atoms in different parts of a molecule that are connected by a bridge of two or more other atoms