The Collaborative International Dictionary of English v.0.48:

Tidy \Ti"dy\, v. i.
   To make things tidy. [Colloq.]
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         I have tidied and tidied over and over again.
                                                  --Dickens.
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The Collaborative International Dictionary of English v.0.48:

Tidy \Ti"dy\, n. (Zool.)
   The wren; -- called also tiddy. [Prov. Eng.]
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         The tidy for her notes as delicate as they. --Drayton.
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   Note: This name is probably applied also to other small
         singing birds, as the goldcrest.
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The Collaborative International Dictionary of English v.0.48:

Tidy \Ti"dy\, a. [Compar. Tidier; superl. Tidiest.] [From
   Tide time, season; cf. D. tijdig timely, G. zeitig, Dan. &
   Sw. tidig.]
   1. Being in proper time; timely; seasonable; favorable; as,
      tidy weather. [Obs.]
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            If weather be fair and tidy.          --Tusser.
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   2. Arranged in good order; orderly; appropriate; neat; kept
      in proper and becoming neatness, or habitually keeping
      things so; as, a tidy lass; their dress is tidy; the
      apartments are well furnished and tidy.
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            A tidy man, that tened [injured] me never. --Piers
                                                  Plowman.
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The Collaborative International Dictionary of English v.0.48:

Tidy \Ti"dy\, n.; pl. Tidies.
   1. A cover, often of tatting, drawn work, or other ornamental
      work, for the back of a chair, the arms of a sofa, or the
      like.
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   2. A child's pinafore. [Prov. Eng.] --Wright.
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The Collaborative International Dictionary of English v.0.48:

Tidy \Ti"dy\, v. t. [imp. & p. p. Tidied; p. pr. & vb. n.
   Tidying.]
   To put in proper order; to make neat; as, to tidy a room; to
   tidy one's dress.
   [1913 Webster]

WordNet (r) 3.0 (2006):

tidy
    adj 1: marked by order and cleanliness in appearance or habits;
           "a tidy person"; "a tidy house"; "a tidy mind" [ant:
           untidy]
    2: (of hair) neat and tidy; "a nicely kempt beard" [syn:
       kempt, tidy]
    3: large in amount or extent or degree; "it cost a considerable
       amount"; "a goodly amount"; "received a hefty bonus"; "a
       respectable sum"; "a tidy sum of money"; "a sizable fortune"
       [syn: goodly, goodish, healthy, hefty, respectable,
       sizable, sizeable, tidy]
    n 1: receptacle that holds odds and ends (as sewing materials)
    v 1: put (things or places) in order; "Tidy up your room!" [syn:
         tidy, tidy up, clean up, neaten, straighten,
         straighten out, square away]