Dinner is the meal you eat at the end of the day, usually at around 5 or 6 o'clock. Dinner can be anything, but is usually some kind of meat and some vegetables.
A watch is something you can use to tell the time on. Watches are small and usually have a strap on, so you can wear them around your wrist. Large watches that you hang on the wall are called clocks.
It is useful to know the time, so you know when to go to school, or have dinner, or watch your favorite TV show.
Once means at one time in the past, for example "I had dinner there once".
It might also mean any period of time in the past, for example "I was once the owner of that house".
It might also mean as soon as, for example "Once you have finished dinner, you can go play".
A banquet is a very large formal dinner, usually with several courses, that is served to a large number of people at once. A less formal large dinner for many people is called a feast.










