How is “the coast is clear” used?

In The Great Dictator (1940), one line is: “It's all right now. The coast is clear. Listen.”

Which movie is “the coast is clear” from?

The clip at the top of this page is from The Great Dictator (1940).

It's all right now. The coast is clear. Listen.

8 作品で登場 · 1 本目

there is no danger of being seen or caught

くだけた · 12 本の映画に登場

オックスフォード映画の 100%
there is no danger of being seen or caught
It's all right now. The coast is clear. Listen.

定義：Oxford Advanced Learner's Dictionary 第 9 版