revcoll. 2. v. 1) увеличивать число оборотов (двигателя); I could hear the motorcycles revving up in preparation for leaving. If you rev up your engine too fast, you may damage it.
rev coll. 2. v.
revcoll. 2. v. 2) ускорять темп (музыки и т.п.); убыстрять; The crime rate is revving up in most big cities. - rev up