Bom \Bom\, n. (Zool.) A large American serpent, so called from the sound it makes. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Bom \Bom\, n. (Zo["o]l.) A large American serpent, so called from the sound it makes.

Source: Webster's Revised Unabridged Dictionary (1913)