Tattoo \Tat*too"\, v. t. [imp. & p. p. {Tattooed}; p. pr. & vb. n. {Tattooing}.] [Of Polynesian origin; cf. New Zealand ta to tattoo, tatu puncturation (in Otaheite).] To color, as the flesh, by pricking in coloring matter, so as to form marks or figures which can not be washed out.