Quill feather is a term that refers to a specific type of feather that is used for writing. The word quill is derived from the Latin word "quillium," which means a hollow tube. During ancient times, quill feathers were used for writing, since they provided a natural swath of ink. Here are a few synonyms for the word quill feather: plume, pen, pinion, quill, and shaft. These feathers are often used for crafting, calligraphy and writing. They are known for their sturdiness and durability, making them ideal for use in a number of different types of pens and pencils.