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half-ball

British  

noun

    1. a contact in billiards, etc, in which the player aims through the centre of the cue ball to the edge of the object ball, so that half the object ball is covered

    2. ( as modifier )

      a half-ball stroke

"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