From koilos ("hollow"); a cavity, i.e. (especially) the abdomen; by implication, the matrix; figuratively, the heart -- belly, womb.

κοιλίᾳ (koilia) − 10 Occurrences

κοιλίαι (koiliai) − 1 Occurrence

κοιλίαν (koilian) − 4 Occurrences

κοιλίας (koilias) − 7 Occurrences