Dictionary - Wikipedia

Kindle Features: Search, X-Ray, Wikipedia and Dictionary Lookup, Instant Translations

Google Dictionary (by Google)

Pentaglot Dictionary - Wikipedia

Madura English–Sinhala Dictionary - Wikipedia

A Dictionary of the English Language - Wikipedia

Collins-Robert French Dictionary - Wikipedia

GoldenDict: dictionary with Wikipedia integration - gHacks Tech News

Wiktionary Dictionary - Wikipedia API Based PHP Dictionary Script by nelliwinne

Gibberish Dictionary, Technobabble Wiki

Kindle iPhone/iPad App Now Smarter With A Dictionary, Wikipedia, And Google

The Lover's Dictionary - Wikipedia

Wiktionary

Bilingual dictionary - Wikipedia

GoldenDict: dictionary with Wikipedia integration - gHacks Tech News