Bo·a n.; pl. Boas.
1. Zool. A genus of large American serpents, including the boa constrictor, the emperor boa of Mexico (Boa imperator), and the chevalier boa of Peru (Boa eques).
Note: ☞ 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.
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