Here's from that same site--and I still don't have the url, although I copied out the list:

Aposiopesis
[Ap`o*si`o*pe"sis] (?; 277), / n. [L., fr. Gr. ?, from ? to be quite silent.] (Rhet.) A figure of speech in which the speaker breaks off suddenly, as if unwilling or unable to state what was in his mind; as, ``I declare to you that his conduct -- but I can not speak of that, here.''


So, maahey, see those question marks? Maybe you've answered their question!