You could have downloaded English-English Talking Dictionary 3.5 from our software library for free. This software was originally created by KHANDBAHALE. The software relates to Education Tools.
From the developer:
It is a tool recommended for English speaking and learning. For each word it gives different accurate meanings, audio pronunciations, appropriate examples, various synonyms, antonyms, history and grammatical description with pictorial explanation.
It is useful while reading, writing, speaking, listening or translating.
You may want to check out more software, such as LingvoSoft Talking Dictionary 2011 English<->Armenian for Windows, LingvoSoft Talking Dictionary 2014 English <-> Hebrew for Windows or LingvoSoft Talking Dictionary 2014 English <-> Korean for Windows, which might be related to English-English Talking Dictionary.