From WordNet (r) 3.0 (2006):
W
n 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 [syn: tungsten,
wolfram, W, atomic number 74]
2: the cardinal compass point that is a 270 degrees [syn:
west, due west, westward, W]
3: 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 [syn: watt, W]
4: the 23rd letter of the Roman alphabet [syn: W, w,
double-u]