Bat-Signal

短语

词形变化

Bat-Signals 复数 Bat-Signals

别名

Bat Signal

释义与例句

n.
  1. 1.

    A thing which serves to attract or summon something.

    习语 非正式

词源

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.

来源：wiktionary