a person or thing that corks.
Informal. something that closes a discussion or settles a question.
Informal. someone or something that is astonishing or excellent.

Origin of corker

1715–25; cork + -er1; defs 2, 3 of unclear relation todef 1 and perhaps of distinct orig. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for corker



  1. something or somebody striking or outstandingthat was a corker of a joke
  2. an irrefutable remark that puts an end to discussion
a person or machine that inserts corks
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for corker

1837, slang, something that "settles" a debate, discussion, conflict, etc.; hence "something astonishing" (1880s). Probably an agent noun from cork (v.) on the notion is of putting a cork in a bottle as an act of finality.

Online Etymology Dictionary, © 2010 Douglas Harper