Abstinent

1. n. One of a sect who appeared in France and Spain in the 3d century.
2. a. Refraining from indulgence, especially from the indulgence of appetite; abstemious; continent; temperate.
3. n. One who abstains.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.