What does a bar over vowel indicate?

A bar over a vowel, also known as a macron, indicates that the vowel is long.

Here are some examples:

* ā (a with a macron) represents the long "a" sound, as in "fāte."

* ē (e with a macron) represents the long "e" sound, as in "bē" (bee).

* ī (i with a macron) represents the long "i" sound, as in "tīme."

* ō (o with a macron) represents the long "o" sound, as in "hōme."

* ū (u with a macron) represents the long "u" sound, as in "cūte."

This notation is commonly used in dictionaries and phonetic transcriptions.

It's important to note that the specific sound of a long vowel might vary depending on the language and dialect.