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gallock

British  
/ ˈɡælək /

adjective

  1. left-handed

  2. left-footed

"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

Etymology

Origin of gallock

perhaps related to French gauche awkward, left