Source : Webster's Revised Unabridged Dictionary (1913)

Cimex \Ci"mex\, n.; pl. {Cimices}. [L., a bug.] (Zo["o]l.)
   A genus of hemipterous insects of which the bedbug is the
   best known example. See {Bedbug}.

Source : WordNet®

Cimex
     n : type genus of the Cimicidae: bedbugs [syn: {genus Cimex}]