2whistle verb
whistles; whis·tled; whis·tling 1 : to make a high sound by blowing air through your lips or teeth [no obj] ▪ He was whistling as he walked down the street. ▪ He whistled for a cab. [+ obj] ▪ He whistled a happy tune. 2 [no obj] : to produce a high and loud sound by forcing air or steam through a device
▪ The teakettle started to whistle. 3 always followed by an adverb or preposition [no obj] : to move, pass, or go very fast with a high sound
▪ A bullet whistled past him.
▪ The teakettle started to whistle.
▪ A bullet whistled past him.
whistle in the dark or whistle past the graveyard
informal : to act or talk as if you are relaxed and not afraid when you are actually afraid or nervous
▪ He shows a confident manner, but he may just be whistling in the dark.
▪ He shows a confident manner, but he may just be whistling in the dark.
— whistling adjective
▪ I heard a whistling noise/sound.
▪ I heard a whistling noise/sound.
