sound - the sudden occurrence of an audible event; "the sound awakened them"

signal, signaling, sign - any communication that encodes a message; "signals from the boat suddenly stopped"

acoustic device - a device for amplifying or transmitting sound

boat whistle - a whistle on a boat that is sounded as a warning

factory whistle - a whistle at a factory that is sounded to announce times for starting or stopping work

signaling device - a device used to send signals

steam whistle - a whistle in which the sound is produced by steam; usually attached to a steam boiler

fipple flute, fipple pipe, vertical flute, recorder - a woodwind with a vertical pipe and 8 finger holes and a whistle mouthpiece

sound, go - make a certain noise or sound; "She went `Mmmmm'"; "The gun went `bang'"

go, locomote, move, travel - change location; move, travel, or proceed; "How fast does your new car go?"; "We travelled from Rome to Naples by bus"; "The policemen went from door to door looking for the suspect"; "The soldiers moved towards the city in an attempt to take it before night fell"

communicate, intercommunicate - transmit thoughts or feelings; "He communicated his anxieties to the psychiatrist"

move, displace - cause to move, both in a concrete and in an abstract sense; "Move those boxes into the corner, please"; "I'm moving my money to another bank"; "The director moved more responsibilities onto his new assistant"

sound, go - make a certain noise or sound; "She went `Mmmmm'"; "The gun went `bang'"

signal, signalise, signalize, sign - communicate silently and non-verbally by signals or signs; "He signed his disapproval with a dismissive hand gesture"; "The diner signaled the waiters to bring the menu"