detrench

verb4

1. •
   To dig out and remove from a trench.

   • In some cases these cables still become damaged and this results in lengths of cable having to be detrenched. — 1979
2. •
   To force (an army) out of trenches, or to be so forced out.

   • Verey lights, no longer needed by the detrenched army, soared with them, descending in wavy pools of radiance. — 1936
3. •
   To render something that was entrenched less thoroughly established.

   • They found themselves caught up in a mesh of arguments about entrenching, re-entrenching and detrenching, with all the relevant permutations and combinations. — 1955
4. •
   To cut off or slice; to sever.

   • That I as well may furnish good mens needs / With blessings, as detrench th'abused store / Of thankles caytiffes; crowne true vertues deeds / With honour, and on vice my vengeance poure. — 1653