Cordless

The term cordless is generally used to refer to electrical or electronic devices that are powered by a battery or battery pack and can operate without a power cord or cable attached to a fixed electricity supply such as an outlet, generator, or other centralized power source, allowing greater mobility. The development of more powerful rechargeable...
Found on http://en.wikipedia.org/wiki/Cordless

cordless

adjective not having a cord; `cordless telephone`
Found on https://www.encyclo.co.uk/local/20974

cordless

[adj] - not having a cord
Found on http://www.webdictionary.co.uk/definition.php?query=cordless
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