·noun Hindrance; impeachment.
II. Impeach ·vt To Hinder; to Impede; to Prevent.
III. Impeach ·vt To challenge or discredit the credibility of, as of a witness, or the validity of, as of commercial paper.
IV. Impeach ·vt Hence, to charge with impropriety; to Dishonor; to bring discredit on; to call in question; as, to impeach one's motives or conduct.
V. Impeach ·vt To charge with a crime or misdemeanor; to Accuse; especially to charge (a public officer), before a competent tribunal, with misbehavior in office; to cite before a tribunal for judgement of official misconduct; to Arraign; as, to impeach a judge. ·see Impeachment.