The phrase "squealing noise" refers to a high-pitched and loud sound that resembles the noise made by a small animal or a wheel that is rotating but needs to be lubricated. It can often be irritating or unpleasant to hear. Full definition
I'm hearing a loud squealing noise when my 09 vw cc 2.0 t is in idle. (humblemechanic.com)
My car makes squealing noises from the passenger front tires every time I drive but not when I brake and the brake light comes on from time to time but I don't understand why if my emergency brake isn't on. (yourmechanic.com)
One sign of a loose or worn belt is a loud squealing noise when the motor is revved. (articles.orlandosentinel.com)