1. "Kazhappu" as a type of tree: This translates to "Indian Coral Tree" or "Erythrina indica" in English.
2. "Kazhappu" as a specific type of food: It can refer to a "stew" or "curry" made with a specific type of fish called "Kazhappu" (which translates to "Indian Coral Tree Fish" in English).
3. "Kazhappu" as a general term for "stew" or "curry": In this case, the most suitable English translation would be "stew" or "curry", depending on the specific dish.
To give you the most accurate translation, please provide more context about how "kazhappu" is used in your situation.