Idiom: Bat-Signal
Meanings
Bat- + signal: the extended (general) sense comes from the Bat-Signal, a searchlight-based distress signal in the DC Universe, used by Gotham City police to summon the superhero Batman.
A thing which serves to attract or summon something.
Example Sentences
1
Commissioner Gordon turned on the Bat-Signal to call for Batman's help.
2
The citizens of Gotham City looked up at the Bat-Signal, hoping Batman would come to their aid.
3
Whenever Gotham is in danger, the Bat-Signal is activated to alert Batman.
4
The police used the Bat-Signal to summon Batman to the crime scene.
5
As the Bat-Signal lit up the night sky, Batman swiftly responded to the call.
