'Bridgehead' definitions:

Definition of 'bridgehead'

From: WordNet
noun
An area in hostile territory that has been captured and is held awaiting further troops and supplies; "an attempt to secure a bridgehead behind enemy lines"; "the only foothold left for British troops in Europe was Gibraltar" [syn: bridgehead, foothold]
noun
A defensive post at the end of a bridge nearest to the enemy

Definition of 'Bridgehead'

From: GCIDE
  • Bridgehead \Bridge"head`\, n. A fortification commanding the extremity of a bridge nearest the enemy, to insure the preservation and usefulness of the bridge, and prevent the enemy from crossing; a t[^e]te-de-pont. [1913 Webster]