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A large headsail having features of both a genoa and a spinnaker.

[Blend of genoa and spinnaker.]
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.


(Sailing) a type of sail used for downwind sailing
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
We had a long upwind leg to start with which was hard work for everyone, but as soon as we rounded the mark, we hoisted the gennaker and sent it!" Fahad Al Hasni added: "We sailed the race well despite the upwind being very tough.
"One of my business partners in our company Gennaker was doing some work with Joe on some rights stuff.
Abu Dhabi: Abu Dhabi Ocean Racing were leading the way in the Volvo Ocean Race on Monday as second-placed Dongfeng Race Team suffered significant damage after part of the control lines for the masthead gennaker sail broke.
An entry on Robertson's iShares Cup Racing website read: "Team iShares have a broken gennaker pole and superficial damage to their bow after a collision and had to sit out all of today's racing, but plan to be back on the water tomorrow."
"I rolled the gennaker, trimmed in the mainsail, eased off the mast rotator and runners and spun the boat into the wind.
DAY 49, Jan 15 (20,105 miles): Ellen suffers a head wound when she is hit by a gennaker [sail].
Ellen, 28, who rounded Cape Horn more than 48 hours ago, said the corner of the gennaker slipped out of the furler and 'flew out and hit me on the forehead'.
She made up several places in the last few days after problems early on including a broken gennaker - an important head-sail.
I was just drifting through a another series of dreams, when the heart- stopping slowing of the boat happened, and the grim realisation that we had once again blown the gennaker halyard - no sail, nothing.
This gave the crew, which included Omani sailors Fahad Al Hasni and Ahmed Al Hassani, reason to be cheerful about the future prospects in the remaining three inshore contests, despite a broken gennaker on the final approach to the finish line in the last race.
"The stern addition to the width of the boat has a massive impact on the reaching performance and the running performance by having more separation between the leech of the gennaker and the mainsail, enables you to cany more staysails and large staysails.