Open English Wordnet
Nouns
(n)dark lantern, bull's-eyea lantern with a single opening and a sliding panel that can be closed to conceal the light
(n)bull's eye, bull's-eyein target shooting: a score made by hitting the center of the target“in repeated sets of five shots his numbers of bull's-eyes varied”
(n)bell ringer, bull's eye, mark, home run, bull's-eyesomething that exactly succeeds in achieving its goal“the new advertising campaign was a bell ringer”, “scored a bull's eye”, “hit the mark”, “the president's speech was a home run”