Erma is a four-letter crossword solution for the term 'Aunt with a 'Cope Book''. Erma is a reference to the character Erma Bombeck, an American humorist and author who wrote about the struggles of being a housewife in the 1960s and 1970s. Her most famous book was titled 'I Lost Everything in the Post-Natal Depression' and it was a bestseller. She also wrote several other books, including 'The Grass Is Always Greener Over the Septic Tank' and 'Aunt Erma's Cope Book'.