The Collaborative International Dictionary of English v.0.48:

Youth \Youth\ ([=u]th), n.; pl. Youths ([=u]ths; 264) or
   collectively Youth. [OE. youthe, youh[thorn]e,
   [yogh]uhe[eth]e, [yogh]uwe[eth]e, [yogh]eo[yogh]e[eth]e, AS.
   geogu[eth], geogo[eth]; akin to OS. jugu[eth], D. jeugd, OHG.
   jugund, G. jugend, Goth. junda. [root]281. See Young.]
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   1. The quality or state of being young; youthfulness;
      juvenility. "In my flower of youth." --Milton.
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            Such as in his face
            Youth smiled celestial.               --Milton.
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   2. The part of life that succeeds to childhood; the period of
      existence preceding maturity or age; the whole early part
      of life, from childhood, or, sometimes, from infancy, to
      manhood.
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            He wondered that your lordship
            Would suffer him to spend his youth at home. --Shak.
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            Those who pass their youth in vice are justly
            condemned to spend their age in folly. --Rambler.
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   3. A young person; especially, a young man.
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            Seven youths from Athens yearly sent. --Dryden.
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   4. Young persons, collectively.
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            It is fit to read the best authors to youth first.
                                                  --B. Jonson.
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