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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.
n, pl -bos or -boes
(Arms & Armour (excluding Firearms)) (formerly) a sword with a marked temper and elasticity
[C16: from Bilboa, variant (in English) of Bilbao, Spain, noted for its blades]
n., pl. -boes.
Usu., bilboes. a long iron bar or bolt with sliding shackles and a lock, formerly attached to the ankles of prisoners.
[1550–60; earlier bilbow, of obscure orig.]
or bil•boa(ˈbɪl boʊ)
n., pl. -boes or -boas.
[1585–95; short for Bilboa blade sword made in Bilboa (variant of Bilbao)]