lunch (l?nch)n.1. A meal eaten at midday.2. The food provided for a midday meal.intr.v. lunched, lunch·ing, lunch·es To eat a midday meal.Idiom: out to lunch Slang Not in touch with the real world; crazy.[Short for luncheon.]lunch?er n.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.lunch (l?nt?) n1. a meal eaten during the middle of the day2. Caribbean (among older people) mid-afternoon teavb3. (intr) to eat lunch4. (tr) to provide or buy lunch for[C16: probably short form of luncheon] ?luncher nCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014lunch (l?nt?) n. 1. a light midday meal between breakfast and dinner; luncheon. 2. any light meal or snack. v.i. 3. to eat lunch. 4. to provide lunch for. Idioms: out to lunch, Slang. in a daze; inattentive or unaware. [1585?95; shortening of luncheon] lunch?er, n. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.dinner – lunch1. ‘dinner’People usually call their main meal of the day dinner. Some people have this meal in the middle of the day, and others have it in the evening.People who call their evening meal dinner usually refer to a meal eaten in the middle of the day as lunch.Be Careful!You don’t usually use ‘a’ with dinner or lunch. Don’t say, for example, I haven’t had a dinner yet’.