W in WordNet English dictionary

1. a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite
   tungsten  wolfram  W  atomic number 74 
   
2. the 23rd letter of the Roman alphabet
   W  w  double-u 
   
3. the cardinal compass point that is a 270 degrees
   west  due west  westward  W 
   
4. a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm
   watt  W 
   
5. the 23rd letter of the Roman alphabet
   W  w  double-u