In law, to stop in the hands of a third person, by legal process (money due or property belonging to the plaintiff's debtor), in order to require it to be paid over to plaintiff in satisfaction of his demand: as, to garnishee the wages of a debtor, or his bank account.
noun.
In law, a person warned, at the suit of a creditor plaintiff, not to pay money which he owes to, or deliver over property which belongs to, the defendant, because he is indebted to the plaintiff.