1º_ Having or feeling important for something. It is a pronominal verb . From the Latin importae ("to cause, to transmit something"). 2º_ Bring foreign merchandise to market in your own territory. By extension it is "to enter any product of foreign manufacture". From the Latin importae ("to carry or carry inward" ). 3º_ For the previous one, it is said in a figurative sense when in computer science a file is brought from another folder to its own.