Hi ryburgh - it's always best to post the full clue, so that people without the puzzle can more readily help you. (I'll assume you have the other answers...)
16a Hilaire Belloc wrote a cautionary verse about her (7) ?E?E?C?
Sorry, we can't find any related questions. Try using the search bar at the top of the page to search for some keywords, or choose a topic and submit your own question.