A town is a place with many streets and buildings, where people live and work. Towns are larger than villages and smaller than cities. Many places that are called towns in Britain would be called cities in the United States.

You use town in order to refer to the town where you live.

You use town in order to refer to the central area of a town where most of the shops and offices are.

If you refer to the town, you are referring to town and city areas in general, as opposed to country areas.

If you say that someone goes to town on something, you mean that they deal with it with a lot of enthusiasm or intensity.

If you describe someone as a man about town or a woman about town, you mean that they are sophisticated, like to go out and spend money, and have a busy social life.

If you go out on the town or go for a night on the town, you enjoy yourself by going to a town centre in the evening and spending a long time there visiting several places of entertainment.