One of the iron fittings attached to the side edges of a top to secure the lower ends of the topmast shrouds and the upper ends of the futtock shrouds.
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.
(Nautical Terms) nautical a horizontal metal disc fixed at the top of a lower mast for holding the futtock shrouds
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014