I've added a dictionary 东西词典 to the script that runs my character analysis tool. It is currently only searchable by Chinese characters, but it has lots of links to related characters and words using character and word composition.  It also shows at a glance information about HSK level and frequency. It contains links to some more polished dictionaries on each character and word. Give it a try here: http://hskhsk.pythonanywhere.com/cidian?q=%E8%83%BD