squeal /skwiːl/verb 3noun 2forms 3 verb3 •To scream with a shrill, prolonged sound.The children squealed with delight while opening their Christmas presents. •To make a squealing noise. (of an object)The brakes squeal terribly. •(slang) To give sensitive information about someone to a third party; to rat on someone.You'd better not squeal on me to the cops. noun2 •A high-pitched sound, such as the scream of a child or a female person, or noisy worn-down brake pads. •The cry of a pig. formssquealed · squealing · squeals