How do you say 'Bident' in greek? Διαινα?

Question

Myths say it was the weapon brandished by Achilles.
Think of a trident, but it only has 2 prongs.

Answer 1

Hello

I am not aware of a word "δίαινα".

I made some research and the best I came up for a two pointed instrument is "δίκροος" (ancient Greek) and "δικράνι" (modern Greek).