決定性打擊
Sockdolager \Sock*dol"a*ger\, n. [A corruption of doxology.] [Written also {sockdologer}.] 1. That which finishes or ends a matter; a settler; a poser, as a heavy blow, a conclusive answer, and the like. [Slang, U.S.] 2. (Angling) A combination of two hooks which close upon each other, by means of a spring, as soon as the fish bites. [U. S.]