I. ˈbil(ˌ)bō noun
or bil·boa -(ˌ)bō(ə)
( plural bilboes or bilbos or bilboas )
Etymology: from Bilboa, earlier form of Bilbao, Spain
: a finely tempered sword
II. noun
( -es )
Etymology: earlier bilbowe, perhaps from Bilboa, Spain
: a long bar of iron with sliding shackles and a lock at the end that is used to confine the feet of prisoners especially on shipboard