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1.
a better place to be
"Would you say they find me unstable
Cause they see me act a little bit different
But I know my way to greener pastures and
Think about it, won't you think it over
Please..."
by *MICHI* April 01, 2003
 
2.
a better or more exciting job or place
A lot of scientists are seeking greener pastures abroad because of the scarcity of opportunities at home
by Atom12345 January 06, 2010