We don't have synonyms for bilboes yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are bilbies, bimboes and bilbos.
°An iron bar fitting around the ankles of prisoners, and having sliding shackles.
"2001: The bilboes looked like handcuffs that went around the ankles. The prisoner lay flat on his back, in the dirt, his feet suspended in the air by a length of iron bar to which the bilboes were fastened. -- Glen David Gold, Carter Beats The Devil"
°An iron bar fitting around the ankles of prisoners, and having sliding shackles.
"2001: The bilboes looked like handcuffs that went around the ankles. The prisoner lay flat on his back, in the dirt, his feet suspended in the air by a length of iron bar to which the bilboes were fastened. -- Glen David Gold, Carter Beats The Devil"