the main meal of the day served in the evening or at midday
"dinner will be at 8"
"on Sundays they had a large dinner when they returned from church"
a party of people assembled to have dinner together
"guests should never be late to a dinner party"
A midday meal (in a context in which the evening meal is called supper or tea).
"After finishing my lunch, I headed straight to work for dinner at noon before heading home for an early supper."
In plain English: Dinner is the main meal of the day, usually eaten in the evening after school or work.
"We usually have dinner at six o'clock in the evening."
Usage: In modern American English, dinner typically refers to the main evening meal, regardless of when it is eaten. Use this term for your primary daily meal at night, even if you also eat lunch.
To eat a dinner.
"After finishing his homework, he finally sat down to eat dinner."
In plain English: To dinner means to eat your main meal of the day, usually in the evening with other people.
"The family will dinner together at seven o'clock."
Usage: Although "dinner" can be used as a noun to describe a meal, it is not standardly used as a verb in modern English. Instead of saying someone "dinned," you should use the verb "to dine" or simply say they "ate dinner."
The word dinner comes from Old French, where it originally meant breakfast. It ultimately derives from a Latin phrase meaning "to break the fast."