This requires just a wee bit of preparation. You prepare two sets of cards, one with the word and part of speech, the other with the definition.
Students mill about the room until they think they've found their partner.
Partners now return to their seats, where they must write two original sentences using their vocabulary word. They then write these sentences on the board. With the class, you go through the sentences on the board, eliciting meaning from context. Another thing you could do is to throw the article in front of them and give them a definition of the word or phrase that you want to focus on, before they have a chance to read the text. Using Pictures Do not overlook the power of a picture.