Trees that have been knocked down by wind or storm; also refers to the sudden release of pressure in a system.
From 'blow' (the action of wind) + 'down' (knocked or pushed down). Can describe both natural phenomena (trees) and mechanical events (pressure release).
After major hurricanes, forestry workers talk about 'blowdown areas' where entire forests are flattened—these actually create ecological diversity as the light-filled deadwood zones become habitats for insects, birds, and new plant growth.
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