What does aposiopesis mean?
The definition of aposiopesis
Ap`o*si`o*pe”sis, n.
Etym: [L., fr. Gr. (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.”