From Sanskrit अङ्गुष्ठ (aṅguṣṭha). Cognate with Gujarati અંગૂઠો (aṅgūṭho), Hindi अंगूठा (aṅgūṭhā) / Urdu انگوٹھا (aṅgūṭhā), and Rajasthani अंगुठौ (ãṅguṭhau-).
अंगठा • (ãṅgaṭhā) m