eyecup

Noun eyecup has 2 senses

• eyecup(n = noun.artifact) eye cup, eyebath - a small vessel with a rim curved to fit the orbit of the eye; use to apply medicated or cleansing solution to the eyeball; "an eyecup is called an eyebath in Britain"
is a kind of vessel

• eyecup(n = noun.animal) optic cup - (embryology) a two-walled cuplike depression that develops into the pigmented and sensory layers of the retina;
is a kind of caliculus, calycle, calyculus