usage: a lantern with a single opening and a sliding panel that can be closed to conceal the light
Noun
1. dark lantern, bull's-eye, lantern
usage: in 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"
2. bull's eye, score
usage: the center of a target
3. bull's eye, bull, center, centre, midpoint
usage: something 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"