English definition of “fit”
a good/loose/tight, etc fit › when something fits someone or somewhere well, loosely, tightly, etc: These shoes are a perfect fit.
SHORT EXPERIENCE [C] › a sudden, uncontrolled period of doing something or feeling something: a coughing fit I hit him in a fit of anger.
ILLNESS [C] › a short period of illness when someone cannot control their movements and becomes unconscious: to have an epileptic fit
have a fit informal › to become extremely angry: Mum had a fit when she saw the mess we'd made.