1º_ Make a stripe, a mark in the form of a line, cross out. 2º_ By the above, ruining a polished surface with a mark by friction or incision. 3º_ For the previous one, "to be or pass so close to something as to scratch it", is used in a figurative sense, as in 'to scratch the dawn' (when the sun is close to the horizon and begins to be seen). 4. To drive someone mad or upset. It is said that it comes from phonograph records, that when they had a scratch in the grooves the pick of the player jumped backwards and repeated the same part of the song several times; Like the crazy people who always repeat the same thing. 5º_ For the previous one, 'scratching' is 'obsessing'.
