noun (plural cornua /-n(y)o͞oə/) Anatomy
a structure with a shape likened to a horn, in particular. a horn-shaped projection of the thyroid cartilage or of certain bones (such as the hyoid and the coccyx). either of the two lateral cavities of the uterus, into which the Fallopian tubes pass. each of three elongated parts of the lateral ventricles of the brain.