私し掠りゃく船せんしりゃくせんMeanings1nounprivateer; corsairhistorical termHistorical term for a privately owned ship authorized by a government to attack enemy vessels during wartime.18世せい紀きには多おおくの私し掠りゃく船せんがカリブ海かいで活かつ動どうしていた。In the 18th century, many privateers operated in the Caribbean Sea.