'Thumbs' in the Bible
You shall slaughter the ram, and take some of its blood and put it on the lobe of Aaron’s right ear and on the lobes of his sons’ right ears and on the thumbs of their right hands and on the big toes of their right feet, and sprinkle the rest of the blood around on the altar.
But Adoni-bezek fled; and they pursued him and caught him and cut off his thumbs and big toes.
Adoni-bezek said, “Seventy kings with their thumbs and their big toes cut off used to gather up scraps under my table; as I have done, so God has repaid me.” So they brought him to Jerusalem and he died there.