IPA: /ˈwɪndˌθroʊ/
KK: /ˈwɪndˌθroʊ/
The act of a tree being uprooted or knocked over by strong winds.
After the storm, there was a lot of windthrow in the forest, with many trees lying on the ground.
Windthrow is formed from "wind" (from Old English "wind", meaning air in motion) and "throw" (from Old English "þrawan", meaning to twist or turn). The word describes trees that have been uprooted or fallen due to the force of the wind, essentially being thrown down by it.
Think of the 'wind' causing trees to be 'thrown' down — that's why windthrow refers to trees that have fallen due to strong winds.