Epexegesis (ep-ex-e-ge’-sis): When one interprets what one has just said. A kind of redefinition or self-interpretation (often signaled by constructions such as “that is to say. . .”).
A beehive’s drones’ sole function is to procreate, that is, they are genetically devoted to perpetuating their species. Their stingers have morphed into penises. They benignly target the Queen, mate, and make more bees.
Question: Why does the US call its remote-controlled killer aircraft “Drones”? Answer: because they’re drudges that fly and make a droning sound! But, their sole purpose is to serve King Death.
As a metonymy, calling a flying remote-controlled killing machine a drone is like calling a seat used for executing people an electric chair.
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Definition courtesy of “Silva Rhetoricae” (rhetoric.byu.edu).