The Collaborative International Dictionary of English v.0.48:

Antique \An*tique"\, a. [F., fr. L. antiquus old, ancient,
   equiv. to anticus, from ante before. Cf. Antic.]
   [1913 Webster]
   1. Old; ancient; of genuine antiquity; as, an antique statue.
      In this sense it usually refers to the flourishing ages of
      Greece and Rome.
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            For the antique world excess and pride did hate.
                                                  --Spenser.
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   2. Old, as respects the present age, or a modern period of
      time; of old fashion; antiquated; as, an antique robe.
      "Antique words." --Spenser.
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   3. Made in imitation of antiquity; as, the antique style of
      Thomson's "Castle of Indolence."
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   4. Odd; fantastic. [In this sense, written antic.]
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   Syn: Ancient; antiquated; obsolete; antic; old-fashioned;
        old. See Ancient.
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The Collaborative International Dictionary of English v.0.48:

Antique \An*tique"\, n. [F. See Antique, a. ]
   In general, anything very old; but in a more limited sense, a
   relic or object of ancient art; collectively, the antique,
   the remains of ancient art, as busts, statues, paintings, and
   vases.
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         Misshapen monuments and maimed antiques. --Byron.
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WordNet (r) 3.0 (2006):

antique
    adj 1: made in or typical of earlier times and valued for its
           age; "the beautiful antique French furniture"
    2: out of fashion; "a suit of rather antique appearance";
       "demode (or outmoded) attire"; "outmoded ideas" [syn:
       antique, demode, ex, old-fashioned, old-hat(p),
       outmoded, passe, passee]
    3: belonging to or lasting from times long ago; "age-old
       customs"; "the antique fear that days would dwindle away to
       complete darkness" [syn: age-old, antique]
    n 1: an elderly man [syn: old-timer, oldtimer, gaffer,
         old geezer, antique]
    2: any piece of furniture or decorative object or the like
       produced in a former period and valuable because of its
       beauty or rarity
    v 1: shop for antiques; "We went antiquing on Saturday"
    2: give an antique appearance to; "antique furniture" [syn:
       antique, antiquate]