Also found in: Wikipedia.
n. pl. bil·boes
An iron bar to which sliding fetters are attached, formerly used to shackle the feet of prisoners.
n. pl. bil·boes Archaic
A sword, especially one having a well-tempered blade.
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.
(Historical Terms) a long iron bar with two sliding shackles, formerly used to confine the ankles of a prisoner
[C16: perhaps changed from Bilbao]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014