wiktionary

Short definition from Wiktionary

Proper noun

1. 1
   Alternative letter-case form of Wiktionary.
2. 2
   A collaborative project run by the Wikimedia Foundation to produce a free and complete dictionary in every language; the dictionaries, collectively, produced by that project.
3. 3
   A particular version of this dictionary project, written in a certain language, such as the English-language Wiktionary (often known simply as the English Wiktionary).

Noun

1. 1
   Any online lexicon resembling Wiktionary, often one that can be edited by the public.
2. 2
   Any of the free dictionaries produced by a collaborative project run by the Wikimedia Foundation.