The Collaborative International Dictionary of English v.0.48:
Cimex \Ci"mex\, n.; pl. Cimices. [L., a bug.] (Zool.) A genus of hemipterous insects of which the bedbug is the best known example. See Bedbug. [1913 Webster]WordNet (r) 3.0 (2006):
Cimex n 1: type genus of the Cimicidae: bedbugs [syn: Cimex, genus Cimex]