eyecup

Noun
  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 (synset 103313559)
    "an eyecup is called an eyebath in Britain"
  2. (embryology) a two-walled cuplike depression that develops into the pigmented and sensory layers of the retina (synset 102158330)

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