'Intrenchment' definitions:

Definition of 'intrenchment'

noun

An entrenched fortification; a position protected by trenches [syn: entrenchment, intrenchment]

From: GCIDE

Intrenchment \In*trench"ment\, n. [From Intrench.] [1913 Webster]
1. The act of intrenching or the state of being intrenched. [1913 Webster]
2. (Mil.) 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. [1913 Webster]
On our side, we have thrown up intrenchments on Winter and Prospect Hills. --Washington. [1913 Webster]
3. Any defense or protection. [1913 Webster]
4. An encroachment or infringement. [1913 Webster]
The slight intrenchment upon individual freedom. --Southey. [1913 Webster]