stridor

A harsh, shrill, grating, or creaking sound.

A harsh, high-pitched sound in inhalation or exhalation.

A harsh, creaking noise.

A harsh, shrill, or creaking noise.

A harsh, shrill, unpleasant noise.

A high pitched sound heard on inspiration resulting from turbulent air flow in the upper airway usually indicative of serious airway obstruction.

a whistling sound when breathing (usually heard on inspiration); indicates obstruction of the trachea or larynx