Source : Webster's Revised Unabridged Dictionary (1913)

Rum \Rum\, n. [probably shortened from Prov. E. rumbullion a
   great tumult, formerly applied in the island of Barbadoes to
   an intoxicating liquor.]
   A kind of intoxicating liquor distilled from cane juice, or
   from the scummings of the boiled juice, or from treacle or
   molasses, or from the lees of former distillations. Also,
   sometimes used colloquially as a generic or a collective name
   for intoxicating liquor.

   {Rum bud}, a grog blossom. [Colloq.]

   {Rum shrub}, a drink composed of rum, water, sugar, and lime
      juice or lemon juice, with some flavoring extract.

Rum \Rum\, a. [Formerly rome, a slang word for good; possibly of
   Gypsy origin; cf. Gypsy rom a husband, a gypsy.]
   Old-fashioned; queer; odd; as, a rum idea; a rum fellow.
   [Slang] --Dickens.

Rum \Rum\, n.
   A queer or odd person or thing; a country parson. [Slang,
   Obs.] --Swift.

Source : WordNet®

rum
     adj : beyond or deviating from the usual or expected; "a curious
           hybrid accent"; "her speech has a funny twang"; "they
           have some funny ideas about war"; "had an odd name";
           "the peculiar aromatic odor of cloves"; "something
           definitely queer about this town"; "what a rum fellow";
           "singular behavior" [syn: {curious}, {funny}, {odd}, {peculiar},
            {queer}, {rummy}, {singular}]

rum
     n 1: distilled from fermented molasses
     2: a card game based on collecting sets and sequences; the
        winner is the first to meld all their cards [syn: {rummy}]