bilboes

The bilboes were iron bars fixed to the deck a little abaft the main-mast.

From On the Spanish Main Or, Some English forays on the Isthmus of Darien. by John Masefield

In the very oldest court records, which are still preserved, of the settlement of Boston—the Bay colony—appear the frequent sentences of offenders to be placed in the bilboes.

From Curious Punishments of Bygone Days by Alice Morse Earle

William James, for incontinency, was ſentenced to be ſet in the bilboes at Boſton and Salem, and bound in 20l.

From The Olden Time Series, Vol. 5: Some Strange and Curious Punishments Gleanings Chiefly from Old Newspapers of Boston and Salem, Massachusetts by Henry M. (Henry Mason) Brooks

They were right glad that I should come down to you, and I gave them the word of a sailor that I would get you out of the bilboes if it might anyhow be done.'

From Micah Clarke His Statement as made to his three grandchildren Joseph, Gervas and Reuben During the Hard Winter of 1734 by Sir Arthur Conan Doyle

Them apostles was fishermen, d’ye see, and the fishermen and longshore folk always was more peaceable and quieter-like than us deep-sea bilboes.

From Athelstane Ford by Allen Upward