Pronunciation: (lunch), [key]
1. a light midday meal between breakfast and dinner; luncheon.
2. any light meal or snack.
3. a restaurant or lunchroom: Let's eat at the dairy lunch.
4. out to lunch, Slang.not paying attention or tending to business; negligent: You must have been out to lunch when you wrote that weird report.
to eat lunch: We lunched quite late today.
to provide lunch for: They lunched us in regal fashion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.