It's used to describe someone who is skilled in the art of using language, especially in writing. They are:
* Expert in crafting words: They have a deep understanding of the nuances of language, choosing the right words to convey meaning, evoke emotion, and create impact.
* Master of the written form: They can write in a variety of styles, from poetry to prose, and can adapt their language to different audiences and purposes.
* Creative with language: They can use words in innovative ways to create something original and memorable.
Essentially, a wordsmith is a master of language, a craftsperson who uses words as their tools.