In their dreams. My lexicographer and lawyer colleagues have faced this one many times. As I understand it once a trademark enters common usage as a verb it is

In their dreams. My lexicographer and lawyer colleagues have faced this one many times. As I understand it once a trademark enters common usage as a verb it is safe for inclusion in the dictionary, as a noun it isn't. http://oxforddictionaries.com/definition/Hoover#m_en_gb0386130.002 http://oxforddictionaries.com/definition/Hoover#m_en_gb03861... http://oxforddictionaries.com/definition/google http://oxforddictionaries.com/definition/google http://oxforddictionaries.com/definition/photoshop http://oxforddictionaries.com/definition/photoshop