Goes to town on

The answer to the crossword question “Goes to town on” is “HAS AT.” This phrase means to attack someone or something vigorously or aggressively. It can be used in various contexts, such as “The politician had a lot to say and really had at his opponent during the debate,” or “The dog had at the bone for hours until it was stripped clean.” Overall, “has at” is an idiom that implies a strong and focused effort towards a particular goal or objective.