Origin: L. Boa a kind of water serpent. Perh. Fr. Bos an ox.
1. (Science: herpetology) a genus of large American serpents, including the boa constrictor, the emperor boa of Mexico (B. Imperator), and the chevalier boa of Peru (B. Eques).
The name is also applied to related genera; as, the dog-headed boa (Xiphosoma caninum).
2. A long, round fur tippet; so called from its resemblance in shape to the boa constrictor.