The Collaborative International Dictionary of English v.0.48:

Sage \Sage\, a. [Compar. Sager; superl. Sagest.] [F., fr. L.
   sapius (only in nesapius unwise, foolish), fr. sapere to be
   wise; perhaps akin to E. sap. Cf. Savor, Sapient,
   Insipid.]
   1. Having nice discernment and powers of judging; prudent;
      grave; sagacious.
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            All you sage counselors, hence!       --Shak.
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   2. Proceeding from wisdom; well judged; shrewd; well adapted
      to the purpose.
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            Commanders, who, cloaking their fear under show of
            sage advice, counseled the general to retreat.
                                                  --Milton.
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   3. Grave; serious; solemn. [R.] "[Great bards] in sage and
      solemn tunes have sung." --Milton.
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   Syn: Wise; sagacious; sapient; grave; prudent; judicious.
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