Cro'jack or Crossjack : a square yard used to spread the foot of a topsail where no course is set, e.g. on the foremast of a topsail schooner or above the driver on the mizzen mast of a ship rigged vessel
Brethrencoast, Glossary of Nautical Terms - Talk like a pirate, Sylvan Dell Publishing, USA 2000. Brethren of the Coast is a non-profit site which was created solely for those interested in 'Piracy of Old' on the high seas. It is NOT associated with any organization or reinactment group by the same name. This just me personal website on the subject. http://brethrencoast.com/Glossary.html, (Mrtm - Amer) {574}