استوكحت الفِرَاخُ The young birds became big, bulky, or coarse. (Ṣ, Ḳ.)

وُكُحٌ Big, bulky, or coarse, young birds: (Ḳ:) after the manner of a rel. n., as though pl. of وَاكِحٌ, or وَكُوحٌ, since it cannot be pl. of مُسْتَوْكِحٌ. (TA.)