To cut off; to pare away.

To lessen; to abridge; to curtail; as, to retrench superfluities or expenses.

To cause or suffer retrenchment; specifically, to cut down living expenses; as, it is more reputable to retrench than to live embarrassed.

To furnish with a retrenchment; as, to retrench bastions.

make a reduction, as in one's workforce; "The company had to retrench"

tighten one's belt; use resources carefully

To confine; to limit; to restrict.