'Dagger' in the Bible

But Ehud made him a dagger which had two edges, of a cubit length; and he did gird it under his raiment upon his right thigh.

And Ehud put forth his left hand, and took the dagger from his right thigh, and thrust it into his belly:

And the haft also went in after the blade; and the fat closed upon the blade, so that he could not draw the dagger out of his belly; and the dirt came out.