The Collaborative International Dictionary of English v.0.48:

Stuff \Stuff\, v. t. [imp. & p. p. Stuffed; p. pr. & vb. n.
   Stuffing.] [OE. stoffen; cf. OF. estoffer, F. ['e]toffer,
   to put stuff in, to stuff, to line, also, OF. estouffer to
   stifle, F. ['e]touffer; both perhaps of Teutonic origin, and
   akin to E. stop. Cf. Stop, v. t., Stuff, n.]
   1. To fill by crowding something into; to cram with
      something; to load to excess; as, to stuff a bedtick.
      [1913 Webster]

            Sometimes this crook drew hazel bought adown,
            And stuffed her apron wide with nuts so brown.
                                                  --Gay.
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            Lest the gods, for sin,
            Should with a swelling dropsy stuff thy skin.
                                                  --Dryden.
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   2. To thrust or crowd; to press; to pack.
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            Put roses into a glass with a narrow mouth, stuffing
            them close together . . . and they retain smell and
            color.                                --Bacon.
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   3. To fill by being pressed or packed into.
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            With inward arms the dire machine they load,
            And iron bowels stuff the dark abode. --Dryden.
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   4. (Cookery) To fill with a seasoning composition of bread,
      meat, condiments, etc.; as, to stuff a turkey.
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   5. To obstruct, as any of the organs; to affect with some
      obstruction in the organs of sense or respiration.
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            I'm stuffed, cousin; I can not smell. --Shak.
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   6. To fill the skin of, for the purpose of preserving as a
      specimen; -- said of birds or other animals.
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   7. To form or fashion by packing with the necessary material.
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            An Eastern king put a judge to death for an
            iniquitous sentence, and ordered his hide to be
            stuffed into a cushion, and placed upon the
            tribunal.                             --Swift.
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   8. To crowd with facts; to cram the mind of; sometimes, to
      crowd or fill with false or idle tales or fancies.
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   9. To put fraudulent votes into (a ballot box). [U. S.]
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

filled \filled\ adj.
   1. containing as much or as many as is possible or normal;
      as, filled to overflowing. Opposite of empty. [Narrower
      terms: abounding in(predicate), abounding
      with(predicate), bristling with(predicate), full
      of(predicate), overflowing, overflowing with(predicate),
      rich in(predicate), rife with(predicate), thick
      with(predicate); brimful, brimful of(predicate),
      brimfull, brimfull of(predicate), brimming, brimming
      with(predicate); chockablock(predicate),
      chock-full(predicate), chockfull(predicate),
      chockful(predicate), choke-full(predicate),
      chuck-full(predicate), cram full; congested, engorged;
      crawling with(predicate), overrun with, swarming,
      swarming with(predicate), teeming, teeming
      with(predicate); flooded, inundated, swamped ; {glutted,
      overfull; heavy with(predicate) ; {laden, loaded ;
      {overladen, overloaded ; {stuffed ; {stuffed; well-lined
      ]

   Syn: full.
        [WordNet 1.5]

   2. entirely of one substance with no holes inside. Opposite
      of {hollow.

   Syn: solid.
        [WordNet 1.5]

   3. having appointments throughout the course of a period; --
      of an appointment schedule; as, My calendar is filled for
      the week. Opposite of unoccupied and free

   Syn: occupied.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

stuffed
    adj 1: filled with something; "a stuffed turkey"
    2: crammed with food; "a full stomach"; "I feel stuffed"