It is called a dash.
That is called a hyphen.
It's called a hyphen !
The - symbol can either be called a hyphen or a dash.
Hyphen
modifier
You say "A hyphen" because the sound of the letter "H" at the beginning of the word "hyphen" is pronounced, making it a consonant sound.
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Hyphen
The symbol "!" is called an exclamation mark. It is used in writing to indicate strong feelings, commands, or exclamatory statements.
These are punctuation marks.
potatoes are called sbuds If you mean the symbol "-" then in the United Kingdom, of which England is a part, it is called a "hyphen".