The Collaborative International Dictionary of English v.0.48:

Plenty \Plen"ty\, n.; pl. Plenties, in --Shak. [OE. plentee,
   plente, OF. plent['e], fr. L. plenitas, fr. plenus full. See
   Full, a., and cf. Complete.]
   Full or adequate supply; enough and to spare; sufficiency;
   specifically, abundant productiveness of the earth; ample
   supply for human wants; abundance; copiousness. "Plenty of
   corn and wine." --Gen. xxvii. 28. "Promises Britain peace and
   plenty." --Shak.
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         Houses of office stuffed with plentee.   --Chaucer.
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         The teeming clouds Descend in gladsome plenty o'er the
         world.                                   --Thomson.
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   Syn: Abundance; exuberance. See Abundance.
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