The term ONE REUNING can be broken down into two crossword solutions: ALUMNA (6 letters) and ALUM (4 letters). An ALUMNA is a female graduate or former student of a school, college, or university. An ALUM is a male graduate or former student of a school, college, or university. Therefore, the term ONE REUNING can refer to either a female or male graduate or former student of a school, college, or university who is attending a reunion.