This thread made me think about words that are removed from dictionaries because of lack of common use. Stephen Chrisomalis has made a collection of "lost words" and listed them with definitions at
http://phrontistery.info/clwdef.html It's fun to read his list - some of these words are great, like: yelve- a garden fork; welmish - pale or sickly color; tussicate - to cough.