The term 'advice icon' can be summarized by the crossword solution 'ABBY'. This is a reference to the popular advice columnist Abigail Van Buren, who wrote the column 'Dear ABBY' from 1956 until her death in 2013. Her column was syndicated in over 1, 400 newspapers and was read by millions of people around the world. She was known for her compassionate and straightforward advice, which earned her the nickname 'the advice icon'.