Greek word
tríbolos
τρίβολος
What it means
properly, a crow-foot, i.e. a thorny plant
properly, a crow-foot (three-pronged obstruction in war), i.e. (by analogy) a thorny plant (caltrop)
Where it comes from
from treîs (τρεῖς) and bélos (βέλος)
How the King James translates it
Every place it appears 1
Hebrews6:8