聊天,娱乐和学习新单词,通过传递其意义询问该组的话
Brain Gap is a game that combines a regular chat interface with a word game whiteboard. People can use the free dictionary while they chat, if the word seems interesting they can ask the other group members to guess the word by just having its meaning as the hint. this enables group members to learn new words as they try to map words by their meaning.