Windy or exposed to wind; characterized by blowing wind.
From 'blow' plus the suffix '-y' (forming adjectives meaning 'full of' or 'having qualities of'). An informal British English term dating to at least the 19th century.
British speakers use 'blowy' to describe that specific feeling of wind-battered hilltops or seaside promenades where your hair goes everywhere—it's more evocative than just saying 'windy.'
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