The practical experience of life, including hardship and disappointments.
Often used by those who couldn't/didn't go to college for whatever reason and instead went through hardships and disappointments.
He pulled himself up by the bootstraps and made his way through the school of hard knocks.
A misspelled form of southern belle, which this website apparently doesn't have the definition of.
A southern belle is a beautiful, rich and innocent girl from the Southern states of the U.S. The term is most commonly found in romance novels or books, since society is being taken over by a new generation that doesn't deign to use it. (psst, that means us, the teenagers and future of America. A sad bunch, aren'we?)
Student's essay: Theodore Roosevelt married a southern bell from the a plantation in the hills of Carolina.
Teacher's note: The proper spelling is southern bell, and Mrs. Lincoln was not from Carolina, check your facts.