Definition & Meaning of "blimey"in English

What is the origin of the exclamation "blimey" and how is it used?

Blimey is a British exclamation used to express astonishment, shock, or disbelief. It originated in late 19th-century England as a shortened, softened form of "God blind me," following a common pattern of creating euphemistic expressions that avoid directly invoking God. It became widespread in everyday speech, newspapers, and popular culture, especially in working-class and Cockney communities. Today it sounds colloquial, slightly old-fashioned, and inoffensive, often adding a playful or emphatic tone rather than serious alarm.