A dash is the act of running or going somewhere quickly and suddenly.

A dash of something is a small quantity of it which you add when you are preparing food or mixing a drink.

A dash of a quality is a small amount of it that is found in something and often makes it more interesting or distinctive.

A dash is a straight, horizontal line used in writing, for example, to separate two main clauses whose meanings are closely connected.

If you dash off to a place, you go there very quickly.

If you dash off a piece of writing, you write or compose it very quickly, without thinking about it very much.

If you make a dash for a place, you run there very quickly, for example, to escape from someone or something.

If you dash somewhere, you run or go there quickly and suddenly.

If you say that you have to dash, you mean that you are in a hurry and have to leave immediately.

If you dash something against a wall or other surface, you throw or push it violently, often so hard that it breaks.

If an event or person dashes someone's hopes or expectations, it destroys them by making it impossible that the thing that is hoped for or expected will ever happen.