1make or become too hot: [no object]:her car started to overheat [with object]:it’s vital not to overheat the liquid
make or become too excited: (as adjective overheated)his overheated imagination
2 [no object] (of a country’s economy) show marked inflation when increased demand results in rising prices rather than increased output:in 1987 the Treasury had allowed the economy to overheat
overheat in other Oxford dictionaries
Definition of overheat in the US English dictionary
