sockdologer

/sɑkˈdɑlɪdʒər/
noun
  1. A decisive blow or argument that settles a matter.
    • That joke was a sockdologer; everyone laughed for minutes.
    • The pitcher threw a sockdologer that struck out the batter.
    • His closing statement was a sockdologer that won the case.
  2. Something outstanding or exceptional of its kind.
    • Her new novel is a sockdologer, full of surprises.
    • The meal was a sockdologer; every dish was perfect.
    • The fireworks finale was a sockdologer.