breakfast Syllabification: (break·fast)Pronunciation: /ˈbrekfəst/Translate breakfast | into French | into German | into Italian | into Spanish Definition of breakfast noun a meal eaten in the morning, the first of the day:I often have toast for my breakfast I don’t eat breakfast verb [no object] eat breakfast:she breakfasted on French toast and baconPhrases have (or eat) someone for breakfast informal deal with or defeat someone with contemptuous ease. Derivatives breakfaster noun breakfastless adjective Origin: late Middle English: from the verb break1 + fast2breakfast in other Oxford dictionaries Definition of breakfast in the British & World English dictionary