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WordNet (r) 3.0 (2006) (WordNet)

eyecup
n 1: 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" [synonym:
{eyecup}, {eyebath}, {eye cup}]
2: (embryology) a two-walled cuplike depression that develops
into the pigmented and sensory layers of the retina [synonym:
{optic cup}, {eyecup}]