You searched for: “colons”
colon (s) (noun), colons (pl)
A punctuation mark :, which is used after a word introducing a quotation, an explanation, an example, or a series; and that is often presented after the salutation in a business letter; such as,
Dear Mr. Jones:
This entry is located in the following unit: Punctuation Marks with Symbols, Explanations, and Examples (page 1)
Colon :
(colons as punctuation marks)