The word "tattoo" may be derived from the Tahitian word tatu, meaning "to make a mark."

  A tattoo is a permanent coloration of the second layer of the skin. It's produced by puncturing the skin with special needles dipped in indelible inks.

  Groups of needles are inserted in an electrically powered, hand-held machine that drives them into the skin at about 2,300 insertions a minute, similar to a sewing machine.

  Fine or bold lines, perspective and depth, shading and coloring are achieved according to the skills of the tattooist and the grouping length.

  The pain varies, depending on the person and the body part being tattooed.