How do you spell in french?

The French word for "spell" can have several different meanings depending on the context.

Here are some options:

* "To spell" (as in writing a word letter by letter): épeler

* "To cast a spell" (as in magic): lancer un sort

* "To spell out" (as in explaining something in detail): détailler

* "A spell" (as in a period of time): un sort (this is often used in the context of "a spell of bad weather")

Let me know if you can provide more context about what you want to say, and I can give you a more accurate translation!