English-English Online

English-English Online

One Look Dictionary Search
http://www.onelook.com/

MSN Dictionary Online
http://encarta.msn.com/encnet/features/dictionary/dictionaryhome.aspx

Cambridge Dictionary Online
http://dictionary.cambridge.org/

English-Chinese/Chinese-English Dictionary

http://www.dreye.com/tw/
譯點通線上字典

http://www.pristine.com.tw/lexicon.php?lang=b5
英漢/漢英詞彙語料庫

http://www.onlinedict.com/
顏元叔英漢/英英雙解辭典