From Bilbao, a city in Spain.
bilbo (plural bilbos or bilboes)
- A device for punishment. See bilboes.
- (historical) A kind of sword with well-tempered and flexible blade, originally produced in Bilbao.
- 1982, TC Boyle, Water Music, Penguin 2006, p. 14:
- A boy bursts in to the tent, double-edged bilbo in hand.