\E*lench"\ ([-e]*l[e^][ng]k"), n.; pl. {Elenchs}. [L.
elenchus, Gr. ?, fr. ? to convict, confute, prove: cf. OF.
elenche.] (Logic)
(a) That part of an argument on which its conclusiveness
    depends; that which convinces of refutes an antagonist; a
    refutation.
(b) A specious but fallacious argument; a sophism.