Definition of show out in English:

show out

phrasal verb

Bridge
  • Reveal that one has no cards of a particular suit.

    ‘all these plans went kaput when West showed out on the spade ace’
    • ‘‘East showed out,’ Louie grumbled, ‘so I started the diamonds.’’
    • ‘She won the first two diamonds, pitching two hearts, drew four rounds of trumps - showing out herself on the second round - and set about the completely impossible task of taking 4 club tricks.’