From WordNet (r) 3.0 (2006):
E
n 1: a fat-soluble vitamin that is essential for normal
reproduction; an important antioxidant that neutralizes
free radicals in the body [syn: vitamin E, tocopherol,
E]
2: a radioactive transuranic element produced by bombarding
plutonium with neutrons [syn: einsteinium, Es, E,
atomic number 99]
3: the cardinal compass point that is at 90 degrees [syn:
east, due east, eastward, E]
4: the base of the natural system of logarithms; approximately
equal to 2.718282...
5: the 5th letter of the Roman alphabet [syn: E, e]