I take it that cropper means something else in England?
crop·per 1 (krpr)
n.
A person who works land in return for a share of the yield; a sharecropper.
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crop·per 2 (krpr)
n.
1. A heavy fall; a tumble.
2. A disastrous failure; a fiasco.
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[Perhaps from the phrase neck and crop, completely.]
The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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cropper [ˈkrɒpə]
n
1. (Life Sciences & Allied Applications / Agriculture) a person who cultivates or harvests a crop
2. (Engineering / Mechanical Engineering)
a. a cutting machine for removing the heads from castings and ingots
b. a guillotine for cutting lengths of bar or strip
3. (Clothing, Personal Arts & Crafts / Textiles) a machine for shearing the nap from cloth
4. (Life Sciences & Allied Applications / Agriculture) a plant or breed of plant that will produce a certain kind of crop under specified conditions a poor cropper on light land
5. (Life Sciences & Allied Applications / Breeds) (often capital) a variety of domestic pigeon with a puffed-out crop
come a cropper Informal
a. to fall heavily
b. to fail completely