The Collaborative International Dictionary of English v.0.48:

Hypobole \Hy*pob"o*le\, n. [Gr. ? a throwing under, a
   suggesting; ? under + ? to throw.] (Rhet.)
   A figure in which several things are mentioned that seem to
   make against the argument, or in favor of the opposite side,
   each of them being refuted in order.
   [1913 Webster]