Hits or strikes something or someone, usually in a clumsy or forceful way.
From British slang 'biff' (to hit), likely onomatopoetic in origin, meaning the word imitates the sound of impact. It gained popularity in mid-20th century British English, particularly in schoolyard and casual contexts.
The word 'biff' is pure onomatopoeia—it actually sounds like what it means! This is why it's so satisfying to say and why it became especially popular in British children's comics and adventure stories like the Famous Five.
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