I purloined this book from my sister when I starting taking French classes in high school (back in the day). While on rare occasions it's failed me when I looked up (unwittingly) a colloquialism or obscure word, this handy dictionary has usually served me well. It's not exactly pocket-sized so it wouldn't suit a traveler, but it's very helpful for the serious (or semi-serious in my case) student of the French language. ( )