大だい地ちアースMeanings1nounearth groundrare termelectricity / electronicsRare technical term in electricity; refers to a connection to the physical earth for safety or reference potential. Often simply called アース.See also: アースこの機き器きは必かならず大だい地ちアースに接せつ続ぞくしてください。Be sure to connect this device to an earth ground.
