Retrenchment (French: retrenchment, an old form of retranchement, from retrancher, to cut down, cut short) is an act of cutting down or reduction, particularly of public expenditure. Definition of retrenchment noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. The meaning of retrenchment is to terminate employees or workmen by the employer for economic reasons. This termination of their services is not done as a punishment or disciplinary action but on the ground of surplus labour or the financial position of the business or company. The meaning of RETRENCHMENT is reduction, curtailment; specifically : a cutting of expenses.