Eyecup

from WordNet (r) 3.0 (2006)

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

from The Collaborative International Dictionary of English v.0.48

eyecup \eye"cup`\, n.
   A small oval porcelain or glass cup, having a rim curved to
   fit the orbit of the eye. it is used in the application of
   liquid remedies to eyes; -- called also {eyeglass}.
   [1913 Webster]