Term: caster: a pivoting roller attached to the bottom of furniture or trucks or portable machines to make them movable
Broader: 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) | Unrelated: armored car: a military combat vehicle on wheels with light armor (and usually a machine gun)
Broader: 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) | Unrelated: sitka spruce: a large spruce that grows only along the northwestern coast of the United States and Canada; has sharp stiff needles and thin bark; the wood has a high ratio of strength to weight
Broader: 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) | Unrelated: incisiveness: keenness and forcefulness of thought or expression or intellect
Broader: 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) | Unrelated: canicola fever: an acute feverish disease in people and in dogs marked by gastroenteritis and mild jaundice
Broader: 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) | Unrelated: brush: an implement that has hairs or bristles firmly set into a handle
Broader: 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) | Unrelated: canary wine: a sweet white wine from the Canary Islands
Broader: 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) | Unrelated: glans penis: the conical mass of erectile tissue that forms the head of the penis
Broader: 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) | Unrelated: watt: a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm
Broader: 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) | Unrelated: writing implement: an implement that is used to write
Broader: 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) | Unrelated: badlands: deeply eroded barren land