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Balmain bug

British  
/ ˈbælmeɪn /

noun

  1. a flattish edible Australian shellfish, Ibacus peronii , similar to the Moreton Bay bug

"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 Balmain bug

named after Balmain , a suburb of Sydney, Australia