D defs.my
Entry 1 sense Webster, 1913

Watt

/wät/ · IPA /wɑt/
01 n. A unit of power or activity equal to 107 C.G.S. units of power, or to work done at the rate of one joule a second. An English horse power …
  1. 1.
    A unit of power or activity equal to 107 C.G.S. units of power, or to work done at the rate of one joule a second. An English horse power is approximately equal to 746 watts.(Physics)