Use a slash to separate alternatives.

Then there was Daryl, the cabdriver/bartender.

—John L’Heureux, The Handmaid of Desire

Use a slash, preceded and followed by a space, to divide lines of poetry quoted within running text.

The speaker of Sonnet 130 says of his mistress, “I love to hear her speak, yet well I know / That music hath a far more pleasing sound.”

Slashes also separate parts of fractions and Internet addresses.