The Free Dictionary is online dictionary site. It has Dictionary / Thesaurus , Medical Dictionary, Financial Dictionary, etc... In its bag it has other languages too... Did I wrote it has pronunciation (British and US)!
Think you have got the meaning of a word you were searching, but the meaning contains a word which is new to you! Don't worry just double click on that! You will be taken to the page of that word.
To explore the site yourself click on the image below.