Princeton's WordNet

1. eye, oculus, optic(noun)

   the organ of sight

   Synonyms:
   heart, middle, oculus, center, eye, centre, optic

2. eye(noun)

   good discernment (either visually or as if visually)

   Synonyms:
   heart, middle, oculus, center, centre, optic

3. eye(noun)

   attention to what is seen

   Synonyms:
   heart, middle, oculus, center, centre, optic

4. center, centre, middle, heart, eye(noun)

   an area that is approximately central within some larger region

   Synonyms:
   affection, warmness, affectionateness, substance, center of attention, center field, philia, plaza, meat, centre, center, tenderness, snapper, core, marrow, sum, fondness, nerve, ticker, nerve center, shopping center, midsection, optic, midriff, kernel, nitty-gritty, spirit, centerfield, gist, warmheartedness, nerve centre, inwardness, centre of attention, pith, heart, shopping mall, bosom, mall, essence, nub, mettle, pump, heart and soul, shopping centre, oculus, spunk, midpoint, eye, middle

5. eye(verb)

   a small hole or loop (as in a needle)

   Synonyms:
   heart, middle, oculus, center, centre, optic

6. eye, eyeball(verb)

   look at

   Synonyms:
   eyeball, eye