1º_ Gillette® is a trademark of shaving products and accessories. It was created in the early twentieth century by the American King Camp Gillette who had his company The Gillette Company in the city of Boston (state of Massachusetts, USA). For many years the name was a generic Americanism to call the "razor blade"; although the multinational Procter Gamble that bought the brand at the beginning of the XXI century still maintains it as registered property. 2º_ I do not know if this fits in a dictionary, but I wanted to comment something about the character of the novel Sherlock Holmes, created by the writer Arthur Conan Doyle in 1887, and is that although his appearance was described throughout his work the most popular and almost definitive characterization we owe it to the actor, director and theatrical producer William Gillette, who not only incorporated the curved pipe but also coined the phrase "Oh, this is elementary, my dear fellow" addressed to Dr. Watson.