The first meal of the day, usually eaten in the morning.
The celebratory meal served after a wedding (and occasionally after other solemnities e.g. a funeral).
A meal eaten after a period of (now often religious) fasting.
A meal consisting of food normally eaten in the morning, which may typically include eggs, sausages, toast, bacon, etc.
To serve breakfast to.
To eat the morning meal.
A snack, eaten at or around midnight, a while after the evening meal and a while before breakfast.