Is there a word for fear of glass? Who is Big Bird's friend on Sesame Street? What's the word for the urge to travel? OneLook Reverse Dictionary  can help you with the answer to these and other words when you know the concept but not the term for it. And, for crossword puzzle fans, you can use their wildcard characters to solve the word when you have a couple of blanks filled in but just can't figure out the rest.