"Shredded skin of a boomslang, that's definitely not in the students' cupboard."
-- Harry Potter (CS10)
The boomslang (Dispholidus typus) is a large, venomous snake, found in Africa. Snape keeps boomslang skin in his private stores (CS11).
"boomslang" is an English loan-word from Afrikaans, whence it was in turn formed from two Dutch words, "boom" Du. tree + "slang" Du. snake [NSOED]
From the Web
Boomslang on Harry Potter Wikia
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