Meaning
1. Sparing in diet; refraining from a free use of food and strong drinks.
Instances of longevity are chiefly among the abstemious.
2. Sparing in the enjoyment of animal pleasures of any kind. [This sense is less common, and perhaps not legitimate.]
3. Sparingly used, or used with temperance; belonging to abstinence; as an abstemious diet; an abstemious life.