Meaning of “corn” - Learner’s Dictionary

corn

noun [ U ] us uk /kɔːn/
CROP mainly UK

B1 a crop of grain, or the seed from this crop used to make flour or feed animals:

fields of corn
TALL PLANT US UK sweetcorn

a tall plant with yellow seeds that are cooked and eaten as a vegetable

(Definition of “corn” from the Cambridge Learner’s Dictionary © Cambridge University Press)