Wintersmith (Discworld, #35; Tiffany Aching, #3)

by Terry Pratchett

Some people think that “coven” is a word for a group of witches, and it’s true that’s what the dictionary says. But the real word for a group of witches is an “argument.”

It was the shortest day of the year, which was convenient because it fitted neatly with the longest night.

The log was covered in Feegles. They all looked cheerful. Admittedly, certain death awaited them, but it did not involve—and this is important—having to spell anything.