From Proto-Semitic *ʔiṣbaʕ-. Compare Arabic إِصْبَع (ʔiṣbaʕ), Aramaic אֶצְבְּעָא (ʾeṣbəʿā), Classical Syriac ܨܒܥܐ (ṣeḇʿā), Hebrew אֶצְבַּע ('etsbá'), Coptic ⲧⲏⲃ (tēb), Ugaritic 𐎜𐎕𐎁𐎓 (ủṣbʿ), Egyptian ḏbꜥ.
ኣጻብዕ • (ʾaṣabʿ) ?