The Collaborative International Dictionary of English v.0.48:

Contraband \Con"tra*band\, n. [It. contrabando; contra + bando
   ban, proclamation: cf. F. contrebande. See Ban an edict.]
   1. Illegal or prohibited traffic.
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            Persons the most bound in duty to prevent
            contraband, and the most interested in the seizures.
                                                  --Burke.
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   2. Goods or merchandise the importation or exportation of
      which is forbidden.
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   3. A negro slave, during the Civil War, escaped to, or was
      brought within, the Union lines. Such slave was considered
      contraband of war. [U.S.]
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   Contraband of war, that which, according to international
      law, cannot be supplied to a hostile belligerent except at
      the risk of seizure and condemnation by the aggrieved
      belligerent. --Wharton.
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The Collaborative International Dictionary of English v.0.48:

Contraband \Con"tra*band\, a.
   Prohibited or excluded by law or treaty; forbidden; as,
   contraband goods, or trade.
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         The contraband will always keep pace, in some measure,
         with the fair trade.                     --Burke.
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The Collaborative International Dictionary of English v.0.48:

Contraband \Con"tra*band\, v. t.
   1. To import illegally, as prohibited goods; to smuggle.
      [Obs.] --Johnson.
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   2. To declare prohibited; to forbid. [Obs.]
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            The law severly contrabands
            Our taking business of men's hands.   --Hudibras.
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Moby Thesaurus II by Grady Ward, 1.0:

116 Moby Thesaurus words for "contraband":
   Eighteenth Amendment, Prohibition Party, Volstead Act, actionable,
   against the law, anarchic, anarchistic, anomic, ban, banned,
   barred, black-market, bootleg, bootleg liquor, chargeable,
   cigarette smuggling, cigarettes, contrabandage, contrary to law,
   criminal, denial, disallowance, disapproved, dope, dope smuggling,
   drugs, embargo, excluded, exclusion, felonious, flawed, forbade,
   forbid, forbiddance, forbidden, forbidden fruit, forbidding,
   gunrunning, hot, hot goods, illegal, illegitimate, illicit,
   impermissible, index, index expurgatorius,
   index librorum prohibitorum, inhibition, injunction, interdict,
   interdiction, interdictum, irregular, jewel smuggling, jewels,
   justiciable, law, lawless, narcotics, narcotics smuggling, no-no,
   nonconstitutional, nonlegal, nonlicit, nonpermissible,
   not permitted, off limits, out of bounds, outlaw, outlawed,
   preclusion, prevention, prohibited, prohibition,
   prohibitory injunction, proscribed, proscription, punishable,
   refusal, rejection, repression, restrictive covenants, ruled out,
   ruling out, rumrunning, run, shut out, smuggled goods, smuggling,
   statute, stolen goods, sumptuary laws, suppression, taboo, tabooed,
   triable, unallowed, unauthorized, unconstitutional, under the ban,
   under-the-counter, under-the-table, unlawful, unlicensed,
   unofficial, unpermissible, unsanctioned, unstatutory, untouchable,
   unwarrantable, unwarranted, verboten, vetoed, wrongful, zoning,
   zoning laws