Search the English Dictionary Online (Words, Terms, Definitions, Synonyms). It's fast, accurate, and spam-free.
Find the meaning and dictionary definitions of hundreds of thousands of glossary words. If you're smart you'll memorize them all and use it to impress your friends! But it might take many years to memorize it and maybe it's not a good use of your time, afterall. Ok, so anyway, you can still search for just one word though, right?