Writer

noun

1. A person who writes, or produces literary work.

   "Has your girlfriend written you another letter already? She’s quite a writer!"

2. Anything that writes or produces output.
3. The seller of an option.
4. A clerk of a certain rank in the service of the East India Company, who, after serving a certain number of years, became a factor.
5. An ordinary legal practitioner in Scottish country towns.