Source : Webster's Revised Unabridged Dictionary (1913)

Raceme \Ra*ceme"\, n. [L. racemus a bunch of berries, a cluster
   of grapes. See {Raisin}.] (Bot.)
   A flower cluster with an elongated axis and many one-flowered
   lateral pedicels, as in the currant and chokecherry.

   {Compound raceme}, one having the lower pedicels developed
      into secondary racemes.

Source : WordNet®

raceme
     n : usually elongate cluster of flowers along the main stem in
         which the flowers at the base open first