Definition of rattling

• a rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders); "the death rattle"
• used as intensifiers; `real is sometimes used informally for `really; `rattling is informal; "she was very gifted"; "he played very well"; "a really enjoyable evening"; "Im real sorry about it"; "a rattling good yarn"
• extraordinarily good; used especially as intensifiers; "a fantastic trip to the Orient"; "the film was fantastic!"; "a howling success"; "a marvelous collection of rare books"; "had a rattling conversation about politics"; "a tremendous achievement"