A red [[road sign]]. It's usually in the shape of an octagon in most countries, but can sometimes be in other shapes such as an inverted triangle (in Japan's case).
Has the word "STOP" written in white letters under various languages.


Not to be confused with [[no entry sign]], which in Japan is a red circle with a diagonal bar (post #3627577 is an example).
一時停止 止まれ