Strong’s Greek
G4248 — prenes
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
πρηνής
prenes — pronounced pray-nace'
from 4253; leaning (falling) forward ("prone"), i.e. head foremost:--headlong. see GREEK for 4253
1 occurrence in the KJV.
Acts 1:18
Now this man purchased a field with the reward of iniquity; and falling headlong, he burst asunder in the midst, and all his bowels gushed out.