To regularly change the time when people work.

State of difficulty or stress. To make an effort to do something; bother.

supply.

rotation of object caused by flow of moving air or water around shape of object.

blown by wind with great force. control and operation of motor vehicle. To move cattle from one place to another.

What you ask about; issue. ask someone questions.

cloth canopy which fills with air and allows person or heavy object attached to it to descend slowly when dropped from aircraft. To jump from a plane while attached to a parachute.

used to refer to thing, no matter what.

(of sentence) imposed by judge or court but not enforced as long as no further offence is committed within specified period. To hang something or someone from something.

in most essential respects.

Mill that is powered by the wind. move in manner suggestive of sails of windmill.

child's toy consisting of stick with colored vanes that twirl in wind. spin or rotate like pinwheel.

take place.

type of aircraft which derives both lift and propulsion from one or more sets of horizontally revolving overhead rotors. Aircrafts with spinning blades at the top. transport by helicopter.