a) Habitual moderation in regard to the indulgence of the natural appetites and passions; restrained or moderate indulgence; moderation; as, temperance in eating and drinking; temperance in the indulgence of joy or mirth; specifically, moderation, and sometimes abstinence, in respect to using intoxicating liquors.
On these occasions I have noticed such a dreamy, vacant expression in his eyes, that I might have suspected him of being addicted to the use of some narcotic, had not the temperance and cleanliness of his whole life forbidden such a notion.
Wikipedia foundation.