n (uncountable) A cereal plant grown for its grain, specifically the main such plant grown in a given region, such as oats in parts of Scotland and Ireland, wheat or barley in England and Wales, and maize or sweetcorn in the Americas.
n (US|Canada|Australia|uncountable) A type of grain of the species (taxlink|Zea mays|species), maize
n (British|uncountable) A grain or seed, especially of cereal crops.
v (US|Canada) To granulate; to form a substance into grains.
v (US|Canada) To preserve using coarse salt, e.g. corned beef
v (US|Canada) To provide with corn (typically maize) for feed.
n (US|Canada) Something (e.g. acting, humour, music, or writing) which is deemed old-fashioned or intended to induce emotion.(cite web | title = Corn (emotion) | publisher = Cambridge University Press | work = Cambridge Advanced Learner's Dictionary | url=http://dictionary.cambridge.org/define.asp?key=17186&dict=CALD)