The act of exercising or stretching in preparation for strenuous activity
Example: "If you don't do your warm-ups properly you have a greater chance of injury."
Any act of preparation for a performance
Example: "Drivers are allowed 5 minutes for warm-up before the race starts."
A period of time allocated for performing warm-ups.
Example: "Keep a sharp eye on the referee during warm-up to check out his mood."