قَهْقَهَ He uttered a reiterated (Ḳ, TA) and prolonged, (TA,) or a vehement, laughter: (Ḳ:) or he laughed, reiterating the sound of قَهْ. (Ṣ, Mṣb, Ḳ.)

قَهْقَاهٌ: see حَقْحَاقٌ.