by makeoverguy April 07, 2009
a combination of the words 'good luck'. used as 'bye' in parts of ireland. also spelt: glac, g'lack, g'lac.
by SkinnyEff May 18, 2008
by crankiestrobin June 20, 2011
by Glime Masta July 16, 2003
A bird derived from the wedge in mount sinai, it is giant and has a huge dong. and used as a word and calling to other glacks and glackoloigists. There is only one person that preforms glackology.
by Jimmy the glack June 24, 2009