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Pushball game between New York Police and Fire Departments, 1939

Etymology

From push +‎ ball.

Noun

pushball (countable and uncountable, plural pushballs)

  1. (uncountable) A team game where players attempt to push a large inflatable lightweight ball into the opponent's goal.
  2. (countable) The large ball used for this game.

Translations

source: https://en.wiktionary.org/wiki/pushball