1. Acrobatic revolutions with the body turned sideways and the arms and legs outstretched like the spokes of a wheel.
2. Has wooden spokes and a metal rim.
3. A large coin (as a silver dollar)
4. A lateral handspring with arms and legs extended
ETYM French ycle, Late Lat. cyclus, from Greek kyklos ring or circle, cycle; akin to Skr. cakra wheel, circle. Related to Wheel.
1. A periodically repeated sequence of events.
2. A series of poems or songs on the same theme.
3. An interval during which a recurring sequence of events occurs; SYN. rhythm, round.
4. A single complete execution of a periodically repeated phenomenon.
In physics, a sequence of changes that moves a system away from, and then back to, its original state. An example is a vibration that moves a particle first in one direction and then in the opposite direction, with the particle returning to its original position at the end of the vibration.
ETYM French poulie, perhaps of Teutonic origin.
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; SYN. pulley-block, block.
Simple machine consisting of a fixed, grooved wheel, sometimes in a block, around which a rope or chain can be run. A simple pulley serves only to change the direction of the applied effort (as in a simple hoist for raising loads). The use of more than one pulley results in a mechanical advantage, so that a given effort can raise a heavier load.
The mechanical advantage depends on the arrangement of the pulleys. For instance, a block and tackle arrangement with three ropes supporting the load will lift it with one-third of the effort needed to lift it directly (if friction is ignored), giving a mechanical advantage of 3.
ETYM Latin vehiculum, from vehere to carry; akin to Eng. way, wain. Related to Way, Convex, Inveigh, Veil, Vex.
1. A conveyance that transports people or objects.
2. A medium for the expression or achievement of something.
ETYM Latin velox, -ocis, swift + pes, pedis, a foot. Related to Velocity, and Foot.
Any of several early bicycles with pedals on the front wheel.
Swift-footed; swift-footed person; old-fashioned bicycle.
Old-fashioned bicycle.
ETYM Old Eng. wheel, hweol, AS. hweól, hweogul, hweowol; akin to Dutch wiel, Icel. hvęl, Greek kyklos, Skr. cakra; cf. Icel. hjôl, Dan. hiul, Swed. hjul. Related to Cycle, Cyclopedia.
(Homonym: we'll).
1. 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).
2. A wheel used to control the rudder of a vessel.