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| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a chattering or flighty, light-headed person. |
| kilowatt-hour | |
| —n | |
| kWh a unit of energy equal to the work done by a power of 1000 watts in one hour | |
| kilowatt-hour
A unit used to measure energy, especially electrical energy in commercial applications. One kilowatt-hour is equal to one kilowatt of power produced or consumed over a period of one hour, or 3.6 × 106 joules. |