What does "intrenchment" mean?

Archaic spelling of entrenchment.

Intrenchment

Common synonyms include: entrenchment, defense line, defensive position, defensive works, earthwork system, fortification.

noun

noun ·Rare ·Advanced level

Noun

1
Archaic spelling of entrenchment. alt-of, archaic, countable, uncountable
"This steepness was intensified on all sides by an artificial intrenchment which divided the promontory from the mainland."
2
an entrenched fortification; a position protected by trenches wordnet

"This steepness was intensified on all sides by an artificial intrenchment which divided the promontory from the mainland."