Source : Webster's Revised Unabridged Dictionary (1913)

Cubeb \Cu"beb\ (k?"b?b), n. [F. cub?be (cf. It. cubebe, Pr.,
   Sp., Pg., & NL. cubeba), fr. Ar. kab?bat.]
   The small, spicy berry of a species of pepper ({Piper
   Cubeba}; in med., {Cubeba officinalis}), native in Java and
   Borneo, but now cultivated in various tropical countries. The
   dried unripe fruit is much used in medicine as a stimulant
   and purgative.

Source : WordNet®

cubeb
     n 1: spicy fruit of the cubeb vine; when dried and crushed is
          used medicinally or in perfumery and sometimes smoked in
          cigarettes
     2: tropical southeast Asian shrubby vine bearing spicy
        berrylike fruits [syn: {cubeb vine}, {Java pepper}, {Piper
        cubeba}]
     3: a cigarette containing cubeb [syn: {cubeb cigarette}]