Definition of aspiration. 1  1a : a strong desire to achieve something high or great an aspiration to become famous âusually plural a young man with political/literary aspirationsb : an object of such desire An acting career is her aspiration.
Wheel and axle. The wheel and axle is one of six simple machines identified by Renaissance scientists drawing from Greek texts on technology. The wheel and axle consists of a wheel attached to a smaller axle so that these two parts rotate together in which a force is transferred from one to the other.
The purpose of a truck axle is multiple: it acts to keep two parallel wheels in line with each other, it helps support the weight of the vehicle as well as any cargo, and it may even act as part of the steering, suspension, or drive system.