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1.
A term used to distinguish Greek Easter from the Catholic Easter.
This year Greaster is the week after the Catholic Easter.
by Ares443 April 04, 2006
 
2.
When Greek Easter and Christian Easter coincide.
Would you like to join us for GREASTER brunch?
by Crijen February 28, 2010
 
3.
Easter covered in Grease
Man this Greaster was sticky! What did you get in your Greaster Basket? ----- So MUCH GREASE!!
by MysteryWoods May 30, 2010