Source : Webster's Revised Unabridged Dictionary (1913)

Syllepsis \Syl*lep"sis\, n. [L., fr. Gr. sy`llhpsis a taking
   together, from ?. See {syllable}, n.]
   1. (Rhet.) A figure of speech by which a word is used in a
      literal and metaphorical sense at the same time.

   2. (Gram.) The agreement of a verb or adjective with one,
      rather than another, of two nouns, with either of which it
      might agree in gender, number, etc.; as, rex et regina
      beati.

Source : WordNet®

syllepsis
     n : use of a word to govern two or more words though agreeing in
         number or case etc. with only one
     [also: {syllepses} (pl)]