Wordnik is best described as an online dictionary with context. Type in a word, and it spits back not only its definition, but example sentences, related pictures on Flickr, a thesaurus listing for the word, an audio pronunciation, it’s most recent appearances on Twitter, its occurrence per million word, how many times it has been looked up and its etymology if known.

Take a cultured word like ‘arse’ – Wordnik gives you the full picture of the word, including some great pictures of fruit and vegetables shaped like a rear-end. That beats the old Oxford dictionary any day of the week.