Definition & Meaning of "brolly"in English

What does "brolly" mean in British slang?

The structure is a playful clipping of "umbrella," dropping the first syllable and adding a "-y" suffix for a casual, friendly sound. It is used in British English to mean an umbrella, often in informal or humorous contexts. People typically say "Don't forget your brolly, it's raining" or "I left my brolly on the bus." The term originated in late 19th or early 20th century British slang, and remains common in everyday UK speech, especially in weather related conversation.