- nounAn explosive noise of undetermined origin usually heard in coastal communities and appearing to come from some higher point in elevation.
What was that awful noise just now? - I guess it must have been an airquake.
Словарь американских идиом. — СПб., Изд-во "Лань". Оригинал: A.Маккей, М.Т.Боткер, Дж.И.Гейтс. 1997.