Intrenchment /(?)/

In·trench·ment

Intrenchment

n.
  1. The act of intrenching or the state of being intrenched.
  2. Any defensive work consisting of at least a trench or ditch and a parapet made from the earth thrown up in making such a ditch. (Mil.)
    On our side, we have thrown up intrenchments on Winter and Prospect Hills.
    — Washington.
  3. Any defense or protection.
  4. An encroachment or infringement.
    The slight intrenchment upon individual freedom.