sternson
stern·son
(stûrn′sən)n. Nautical
A bar of metal or wood set between the keelson and the sternpost to fortify the joint. Also called stern knee.
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.
sternson
(ˈstɜːnsən)n
(Nautical Terms) nautical a timber scarfed into or bolted to the sternpost and keelson at the stern of a wooden vessel. Compare stemson
[C19: from stern2 + -son, on the model of keelson]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014