n. In a general sense, a written testimony to the truth of something; a paper written in order to serve as evidence of a matter of fact.n. In a more particular sense, a statement written and signed (usually by some public officer), but not necessarily nor usually sworn to, which is by law made evidence of the truth of the facts stated, for all or for certain purposes.To give a certificate to, as to one who has passed an examination; furnish with a certificate: as, to certificate the captain of a vessel.To attest, certify, or vouch for by certificate: as, to certificate a fact.n. An official written representation that some act has or has not been done, or that some event has occurred, or that some formal legal requirement has been ful-filled.n. A document used in the British custom-house by which certain goods formerly imported can be exported and the duties paid upon importation refunded.n. The opinion of the court, signed by the judges, upon a question of law submitted to them by the chancellor for their decision.