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Sense: 1-2
Origin: Old English
Sense: 3
Date: 1300-1400
Language: Old French
Origin: corne 'horn, corner'; CORNER1

corn

noun
     
corn S3
1 [uncountable] British EnglishHBPTAC plants such as wheat, barley, and oats or their seeds:
fields of corn
an ear of corn (=the top part of this plant where the seeds grow)
corn
2 [uncountable]
a) American English a tall plant with large yellow seeds that grow together on a cob (=long hard part), which is cooked and eaten as a vegetable or fed to animals [= maize British English]
All our chickens are fed on corn.
corn on the cob
b) HBPTAC the seeds of this plant sweetcorn
3 [countable]MI a painful area of thick hard skin on your foot

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