Strong’s Greek
G944 — batrachos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
βάτραχος
batrachos — pronounced bat'-rakh-os
of uncertain derivation; a frog:--frog.
1 occurrence in the KJV.
Revelation 16:13
And I saw three unclean spirits like frogs come out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet.