sea anchor definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a large, canvas-covered frame, usually conical, let out from a ship as a drag or float to reduce drifting or to keep the ship heading into the wind
sea anchor definition by American Heritage Dictionary
A drag, usually a canvas-covered conical frame, floating behind a vessel to prevent drifting or to maintain a heading into the wind. Also called drogue.