The Collaborative International Dictionary of English v.0.48:

Involve \In*volve"\, v. t. [imp. & p. p. Involved; p. pr. &
   vb. n. Involving.] [L. involvere, involutum, to roll about,
   wrap up; pref. in- in + volvere to roll: cf. OF. involver.
   See Voluble, and cf. Involute.]
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   1. To roll or fold up; to wind round; to entwine.
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            Some of serpent kind . . . involved
            Their snaky folds.                    --Milton.
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   2. To envelop completely; to surround; to cover; to hide; to
      involve in darkness or obscurity.
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            And leave a sing[`e]d bottom all involved
            With stench and smoke.                --Milton.
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   3. To complicate or make intricate, as in grammatical
      structure. "Involved discourses." --Locke.
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   4. To connect with something as a natural or logical
      consequence or effect; to include necessarily; to imply.
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            He knows
            His end with mine involved.           --Milton.
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            The contrary necessarily involves a contradiction.
                                                  --Tillotson.
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   5. To take in; to gather in; to mingle confusedly; to blend
      or merge. [R.]
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            The gathering number, as it moves along,
            Involves a vast involuntary throng.   --Pope.
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            Earth with hell
            To mingle and involve.                --Milton.
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   6. To envelop, infold, entangle, or embarrass; as, to involve
      a person in debt or misery.
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   7. To engage thoroughly; to occupy, employ, or absorb.
      "Involved in a deep study." --Sir W. Scott.
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   8. (Math.) To raise to any assigned power; to multiply, as a
      quantity, into itself a given number of times; as, a
      quantity involved to the third or fourth power.

   Syn: To imply; include; implicate; complicate; entangle;
        embarrass; overwhelm.

   Usage: To Involve, Imply. Imply is opposed to express, or
          set forth; thus, an implied engagement is one fairly
          to be understood from the words used or the
          circumstances of the case, though not set forth in
          form. Involve goes beyond the mere interpretation of
          things into their necessary relations; and hence, if
          one thing involves another, it so contains it that the
          two must go together by an indissoluble connection.
          War, for example, involves wide spread misery and
          death; the premises of a syllogism involve the
          conclusion.
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