Strong’s Hebrew
H8207 — shphiyphon
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
שְׁפִיפֹן
shphiyphon — pronounced shef-ee-fone
from an unused root meaning the same as 7779; a kind of serpent (as snapping), probably the cerastes or horned adder:--adder. see H07779
1 occurrence in the KJV.
Genesis 49:17
Dan shall be a serpent by the way, an adder in the path, that biteth the horse heels, so that his rider shall fall backward.