ボンバックスMeanings1nounIndian silk-cotton tree; Bombax ceibaRefers specifically to the tree species Bombax ceiba, also known as パンヤの木. Used in botanical contexts.See also: パンヤの木ボンバックスは熱ねっ帯たい地ち方ほうで見みられる大おおきな木きです。Bombax is a large tree found in tropical regions.