From Longman Dictionary of Contemporary Englishtop speedtop speedFAST/QUICKthe fastest speed a vehicle can move at We tore down the motorway at top speed. a sports car with a top speed of 140 miles per hour → top
Examples from the Corpus
top speed• He gunned the Budgie, and headed past the truck at top speed.• Now everything seemed to happen at top speed.• The cutters were then ordered by a signal flashed from the clifftops to close in at top speed.• Voice over Sarajevo Airport; and the Hercules is unloaded at top speed.• The man she suspected of stealing her purse was running at top speed along the subway platform and up the stairs.• Then, he put the problems down to a lack of top speed compared to other machines in the series.• Gilfil gallops twenty miles at top speed, his hopes renewed, but he finds her listless and unseeing.• The ferry's top speed is 25 mph.• Then at top speed she raced for the keeper's cottage. 