\Re*trench"ment\, n. [Cf. F. retrenchment.]
1. The act or process of retrenching; as, the retrenchment of
   words in a writing.
         The retrenchment of my expenses will convince you
         that ? mean to replace your fortune as far as I can.
                                               --Walpole.
2. (Fort.) A work constructed within another, to prolong the
   defense of the position when the enemy has gained
   possession of the outer work; or to protect the defenders
   till they can retreat or obtain terms for a capitulation.
Syn: Lessening; curtailment; diminution; reduction;
     abridgment.