A certificate, properly authenticated, that a certain ship or vessel therein named, comes from a place where no contagious distempers prevail, and that none of the crew at the time of her departure were infected with any such distemper. Found on http://www.lectlaw.com/def/b101.htm
noun a certificate saying that a departing ship`s company is healthy (to be presented at the next port of arrival) Found on https://www.encyclo.co.uk/local/20974
a certificate, carried by a ship, attesting to the presence or absence of infectious diseases among the ship's crew and at the port from which it has come. · an attestation of fitness or qualification; a commendation: The investigating committee gave him a clean bill of health. Found on https://www.infoplease.com/dictionary/bill-of-health