simple machine - a device for overcoming resistance at one point by applying force at some other pointinclined plane - a simple machine for elevating objects; consists of plane surface that makes an acute angle with the horizontal lever - a simple machine that gives a mechanical advantage when given a fulcrum mechanical device - mechanism consisting of a device that works on mechanical principles pulley, pulley-block, block - a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope wheel - a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines) |