Source : Webster's Revised Unabridged Dictionary (1913)

Bilbo \Bil"bo\, n.; pl. {Bilboes}.
   1. A rapier; a sword; so named from Bilbao, in Spain. --Shak.

   2. pl. A long bar or bolt of iron with sliding shackles, and
      a lock at the end, to confine the feet of prisoners or
      offenders, esp. on board of ships.

            Methought I lay Worse than the mutines in the
            bilboes.                              --Shak.

Source : WordNet®

bilboes
     See {bilbo}