goster verb (intr) Northern English dialect to laugh uncontrollably to gossip Liberaldictionary.com
Word Origin for goster C18: from earlier gauster, from Middle English galstre, of obscure origin 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