Of, being, or having a triangular sail or sails: a jib-headed topsail; a jib-headed schooner.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Nautical Terms) (of a sail) pointed at the top or head
2. (Nautical Terms) (of a sailing vessel or rig) having sails that are triangular
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014