Synonyms for Whistle (same or very similar meaning)
WordNet sense 1 (the sound made by something moving rapidly or by steam coming out of a small aperture):
whistlingWordNet sense 2 (an inexpensive fipple flute):
pennywhistle, tin whistleWordNet sense 3 (make a whining, ringing, or whistling sound):
singFrom the ODE community, based on WordNetadd/edit