What is Apple-knocker?
1.
A Hudson Valley (NY) rube descended from the original Dutch settlers.
Red Skeleton's character, Clem Kaddlehopper was an apple-knocker.
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2.
A hay shaker, hick, or gobby from the country. A country cousin, an unlettered rube.
Get a load of that apple-knocker trying to mail a letter in the fire alarm box!
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3.
a rural person, a rustic person
Get out of my buisness you apple-knocker.
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