1742, Charles Owen, An Essay Towards a Natural History of Serpents
The Bom-Snake, is another Brazilian Reptile, call'd Bom from the Noise it makes in its Motion.
1819, Abraham Rees, The Cyclopaedia
It is said to grow to a vast size, and to be perfectly harmless; but the latter assertion is improbable; it is not certainly of the poisonous race of serpents. This is called the bom, because it emits a remarkable noise resembling the sound of that word, when pronounced with a deep hollow voice.
2013(?), John McGreal, In The Way of It→ISBN, page 34:
On a school trip to The Zoo he found winged Zimbs; Apes and Sais; snakes like small Asps, long Boms and Kraits; Bears like Ted big and small; […]
