In law, to keep back as a set-off or discount; diminish by keeping back a part: as, to recoup from a servant's wages the damages caused by his negligence; to recoup from the price of goods sold a claim for breach of warranty as to quality.To reimburse or indemnify for a loss or damage by a corresponding advantage: commonly used reflexively.To return or bring in an amount equal to.n. In law, the keeping back of something which is due; a deduction; recoupment; discount.