What is Lunch ?
Lunch is (noun) the meal eaten in the middle of the day Come on – lunch will be ready soon. We always have lunch at 12.30. We are having fish and chips for lunch. I’m not hungry so I don’t want a big lunch. The restaurant serves 150 lunches a day. (verb) to have lunch I’m lunching with my sister today. Don’t forget we’re lunching with the agents tomorrow.
source: Easier English, Student Dictionary Upper Intermediate Level