bull's-eye

noun
bull's-eye \ ˈbu̇lz-ˌī \ ˈbəlz- \
1825{ds||1||}
  • a very hard globular candy
  • a circular piece of glass especially with a lump in the middle
  • the center of a target; also : something central or crucial

bull's-eye window

noun
bull's-eye window \
1877
  • a circular window; also : a window made up of bull's-eyes

hit the bull's-eye

idiom
hit the bull's-eye \
  • to be exactly correct
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