(دَثَّ) الدَّالُ وَالثَّاءُ كَلِمَةٌ وَاحِدَةٌ، وَهُوَ الْمَطَرُ الضَّعِيفُ.
Entries on دث in 3 Arabic dictionaries by the authors Al-Ṣāḥib bin ʿAbbād, Al-Muḥīṭ fī l-Lugha, Al-Khalīl b. Aḥmad al-Farāhīdī, Kitāb al-ʿAin and Arabic-English Lexicon by Edward William Lane