To strain means ‘to draw tight’ or ‘to use your effort or strength as much as possible.’ If you strain a muscle, it means that you…
A rev is an informal term; it is an abbreviation for a revolution of the crankshaft within an engine. The related verb means ‘to accelerate’ and it can have an engine, vehicle, or driver as its subject. Rev is also used figuratively, often followed by up, about other things and means ‘to increase’ in both activity and…