What is the symbol that looks like a colon with a line in the middle known as?

The division sign?

Kind of, but it is smaller. My teacher told me to use that after "Works Cited" when citing sources.

Here's what a Works Cited page looks like:

https://owl.english.purdue.edu/owl/resource/747/12/

I see no punctuation after the words "Works Cited"

http://owl.english.purdue.edu/owl/resource/747/12/

The symbol that looks like a colon with a line in the middle is called a "colon equal" or a "colon equals" sign. It is often used in mathematics and computer programming. To get the answer to this question, you can start by describing the symbol to someone who is knowledgeable in mathematics or programming, and they will be able to provide you with the correct name for it. Additionally, you can also search for the symbol using a search engine, such as Google, by typing in a description of the symbol or using keywords related to it. This will lead you to websites or resources that explain the symbol and its name.