眼がん杯ぱいがんぱいMeanings1nounoptic cup; ocular cupanatomyAnatomical term for the cup-shaped structure in the developing eye.眼がん杯ぱいは発はっ生せい過か程ていで網もう膜まくへと分ぶん化かする。The optic cup differentiates into the retina during development.