gdefine 
Simply get a word definition from Google without leaving the command line. I'm forever looking up definitions (not that I'm slow, just that I'm reading complicated material of course), and this proves useful given that I live within the terminal.
Installation
$ gem install gdefine
Usage
$ gdefine love
Noun: An intense feeling of deep affection: "their love for their country".An intense feeling of deep affection: "their love for their country".
Verb: Feel a deep romantic or sexual attachment to (someone): "do you love me?".Feel a deep romantic or sexual attachment to (someone): "do you love me?".
Synonyms: noun. affection - fondness - darling - passionverb. like - be fond of - fancy - adore
Contributing
- Fork it
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Added some feature') - Push to the branch (
git push origin my-new-feature) - Create new Pull Request