كو
كُوَّةٌ and كَوَّةٌ (S, Msb, K) and كَوٌّ (K) A hole, or perforation. or an aperture, (S, Mgh, Msb, K,) in a wall (Msb, K) or chamber; (S, Mgh;] [a mural aperture;] or the first and second, a small one; and the third, a large one (K.) See also مِشْكَاةٌ.
