1.a meal eaten in the middle of the day, typically one that is lighter or less formal than an evening meal.
“a vegetarian lunch”
synonyms: midday meal, luncheon, brunch, light meal, snack; More
verb: lunch; 3rd person present: lunches; past tense: lunched; past participle: lunched; gerund or present participle: lunching
“he told his wife he was lunching with a client”