Entrenchment

Entrenchment, Entrenched or Entrench may refer to:
 * A trench
 * Entrenchment (fortification), a type of fortification
 * Military trenches with relation to Trench warfare, especially that of World War I
 * An entrenchment clause within a constitution, a clause impervious to or somewhat shielded from the amendment process.
 * Entrenchment hypothesis, in financial theory
 * The process forming an Entrenched river, a process of erosion
 * Entrench (album), a 2013 album by the Canadian band KEN mode