An afternoon party at which a light meal is served. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "luncheon" in a sentence
"‘lunch’ or ‘luncheon’ has now arrived, as when we read in the newspapers of a “magnificent _luncheon_”, is altogether modern; the word belonged a century ago to rustic life, and in literature had not travelled beyond the “hobnailed pastorals” which professed to describe that life."
"On the way in this morning, I couldn't help thinking of how this luncheon is a sign of the times and will probably cause one or two of this club's founding fathers to roll in their graves."
"Ladies and gentlemen, this luncheon is the Empire Club's salute to the men and women of Toronto who have committed themselves to bringing a new concert hall to this city."