Bat-Signal

== English == === Alternative forms === Bat-signal bat-signal Bat Signal bat signal === Etymology === From 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. === Noun === Bat-Signal (plural Bat-Signals) (idiomatic, informal) A thing which serves to attract or summon something. For more quotations using this term, see Citations:Bat-Signal. ==== Related terms ==== 🦇 bat-phone ==== See also ==== dog whistle