João Rodegheri's definitions
Something or some situation very difficult to deal with satisfactorily. You may use just 'tough nut' too.
Property division is a tough nut to crack in divorce.
Iraq has become a tough nut for the U.S. government.
Iraq has become a tough nut for the U.S. government.
by João Rodegheri November 11, 2008
Get the tough nut to crackmug.