The Collaborative International Dictionary of English v.0.48:

Slight \Slight\, v. t. [imp. & p. p. Slighted; p. pr. & vb. n.
   Slighting.]
   To disregard, as of little value and unworthy of notice; to
   make light of; as, to slight the divine commands. --Milton.
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         The wretch who slights the bounty of the skies.
                                                  --Cowper.
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   To slight off, to treat slightingly; to drive off; to
      remove. [R.] -- To slight over, to run over in haste; to
      perform superficially; to treat carelessly; as, to slight
      over a theme. "They will but slight it over." --Bacon.
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   Syn: To neglect; disregard; disdain; scorn.

   Usage: Slight, Neglect. To slight is stronger than to
          neglect. We may neglect a duty or person from
          inconsiderateness, or from being over-occupied in
          other concerns. To slight is always a positive and
          intentional act, resulting from feelings of dislike or
          contempt. We ought to put a kind construction on what
          appears neglect on the part of a friend; but when he
          slights us, it is obvious that he is our friend no
          longer.
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                Beware . . . lest the like befall . . .
                If they transgress and slight that sole command.
                                                  --Milton.
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                This my long-sufferance, and my day of grace,
                Those who neglect and scorn shall never taste.
                                                  --Milton.
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The Collaborative International Dictionary of English v.0.48:

Slight \Slight\, v. t. [Cf. D. slechten to level, to demolish.]
   1. To overthrow; to demolish. [Obs.] --Clarendon.
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   2. To make even or level. [Obs.] --Hexham.
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   3. To throw heedlessly. [Obs.]
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            The rogue slighted me into the river. --Shak.
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The Collaborative International Dictionary of English v.0.48:

Slight \Slight\, a. [Compar. Slighter; superl. Slightest.]
   [OE. sli?t, sleght, probably from OD. slicht, slecht, simple,
   plain, D. slecht; akin to OFries. sliucht, G. schlecht,
   schlicht, OHG. sleht smooth, simple, Icel. sl?ttr smooth, Sw.
   sl[aum]t, Goth. sla['i]hts; or uncertain origin.]
   1. Not decidedly marked; not forcible; inconsiderable;
      unimportant; insignificant; not severe; weak; gentle; --
      applied in a great variety of circumstances; as, a slight
      (i. e., feeble) effort; a slight (i. e., perishable)
      structure; a slight (i. e., not deep) impression; a slight
      (i. e., not convincing) argument; a slight (i. e., not
      thorough) examination; slight (i. e., not severe) pain,
      and the like. "At one slight bound." --Milton.
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            Slight is the subject, but not so the praise.
                                                  --Pope.
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            Some firmly embrace doctrines upon slight grounds.
                                                  --Locke.
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   2. Not stout or heavy; slender.
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            His own figure, which was formerly so slight. --Sir
                                                  W. Scott.
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   3. Foolish; silly; weak in intellect. --Hudibras.
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The Collaborative International Dictionary of English v.0.48:

Slight \Slight\, n.
   Sleight. --Spenser.
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The Collaborative International Dictionary of English v.0.48:

Slight \Slight\, n.
   The act of slighting; the manifestation of a moderate degree
   of contempt, as by neglect or oversight; neglect; indignity.
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   Syn: Neglect; disregard; inattention; contempt; disdain;
        scorn; disgrace; indignity; disparagement.
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The Collaborative International Dictionary of English v.0.48:

Slight \Slight\, adv.
   Slightly. [Obs. or Poetic]
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         Think not so slight of glory.            --Milton.
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WordNet (r) 3.0 (2006):

slight
    adj 1: (quantifier used with mass nouns) small in quantity or
           degree; not much or almost none or (with `a') at least
           some; "little rain fell in May"; "gave it little
           thought"; "little time is left"; "we still have little
           money"; "a little hope remained"; "there's slight chance
           that it will work"; "there's a slight chance it will
           work" [syn: little(a), slight] [ant: much(a)]
    2: lacking substance or significance; "slight evidence"; "a
       tenuous argument"; "a thin plot"; a fragile claim to fame"
       [syn: flimsy, fragile, slight, tenuous, thin]
    3: being of delicate or slender build; "she was slender as a
       willow shoot is slender"- Frank Norris; "a slim girl with
       straight blonde hair"; "watched her slight figure cross the
       street" [syn: slender, slight, slim, svelte]
    n 1: a deliberate discourteous act (usually as an expression of
         anger or disapproval) [syn: rebuff, slight]
    v 1: pay no attention to, disrespect; "She cold-shouldered her
         ex-fiance" [syn: slight, cold-shoulder]