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Use "winterkilling" in a sentence
"To overcome this shortcoming, I bend down and peg to the ground, in the late fall, a few slim shoots with dormant catkins, so that the snow, or some other mulching material supplied when there is insufficient snow, will cover and protect the catkins from winterkilling."
"Yields and winterkilling of filbert catkins, Orchard 16, 1935 1937,"