tailspinPronunciation: /ˈteɪlspɪn/Translate tailspin | into Italian Definition of tailspin noun a spin by an aircraft. a state of rapidly increasing chaos or panic:the rise in interest rates sent the stock market into a tailspin verb (tailspins, tailspinning; past and past participle tailspun) [no object] become increasingly chaotic and out of control:an economy tailspinning into chaostailspin in other Oxford dictionaries Definition of tailspin in the US English dictionary