showdown

• show-down

From show +‎ down.

• (General American) IPA^(key): /ˈʃoʊˌdaʊn/

• Audio (Southern England):

  (file)

showdown (countable and uncountable, plural showdowns)

1. (idiomatic) The final battle between two opponents, in which there can be only one victor. [1904^[1]]
   • 2013 March 25, Dr. Paul H. Wright, chapter 8, in Rose Then and Now® Bible Map Atlas: With Biblical Backgrounds and Culture‎^[1], Rose Publishing, →ISBN, page 51:

     David cut his teeth on international politics in his showdown with Goliath, a battle fit for the ages.

   • 2021 May 2, Mantej Mann, “Newcastle United 0-2 Arsenal”, in BBC Sport‎^[2]:

     Pierre-Emerick Aubameyang scored on his first start since recovering from malaria as Arsenal prepared for their Europa League showdown against Villarreal with a confidence-boosting win away to Newcastle at St James' Park.

2. (poker) The final round in a poker match, where all of the remaining players' cards have to be put down on the table and shown. [1873^[1]]