Wiktionary
Etymology 1 a. fictional. Etymology 2
alt. A parlor game in which participants invent definitions for an unfamiliar word found in a dictionary, and as one person reads them out, the others try to guess which one is the correct definition. n. A parlor game in which participants invent definitions for an unfamiliar word found in a dictionary, and as one person reads them out, the others try to guess which one is the correct definition.
Wikipedia
Fictionary, also known as The Dictionary Game or simply Dictionary, is a word game in which players guess the definition of an obscure word. Each round consists of one player selecting and announcing a word from the dictionary, and other players composing a fake definition for it. The definitions are collected by the selector and read aloud, and players vote on which definition they believe to be correct. Points are awarded for correct guesses, and for having a fake definition guessed by another player.