Source : Webster's Revised Unabridged Dictionary (1913)

Titi \Ti"ti\, n. [Orig. uncert.]
   1. A tree of the southern United States ({Cliftonia
      monophylla}) having glossy leaves and racemes of fragrant
      white flowers succeeded by one-seeded drupes; -- called
      also {black titi}, {buckwheat tree}, and {ironwood}.

   2. Any related tree of the genus {Cyrilla}, often disting. as
      {white titi}.

Titi \Ti"ti\, n. (Zo["o]l.)
   Same as {Teetee}.

Source : WordNet®

titi
     n 1: tree of low-lying coastal areas of southeastern United
          States having glossy leaves and racemes of fragrant
          white flowers [syn: {buckwheat tree}, {Cliftonia
          monophylla}]
     2: deciduous shrubby tree of eastern North America having
        deeply fissured bark and sprays of small fragrant white
        flowers and sour-tasting leaves [syn: {sorrel tree}, {sourwood},
         {Oxydendrum arboreum}]
     3: small South American monkeys with long beautiful fur and
        long nonprehensile tail [syn: {titi monkey}]