عث

3 عاتّ ذ , (O,) inf. n. مُعَاثَّةٌ and عِثَاثٌ; (O, K;) and ↓ عثّث, (O,) inf. n. تَعْثِيثٌ; (K;) He raised his voice with singing: (O:) or he trilled, or quavered, in singing: (K:) or he raised his voice with singing, and trilled, or quavered: (L:) and عاثّ فِى غِنَائِهِ, inf. n. as above; and ↓ عثّث; he trilled, or quavered, in his singing. (TA.) And عِثَاثٌ is also used to signify The sounding [or ringing ] of a bow when its string has been pulled to try its strength: some say that it is like the تَرَنُّم [or ringing ] of a basin when it has been struck. (O, TA.)