Tattoo

入墨 (irezumi)

Wikipedia has a good article at Irezumi.

Verify: 入墨 in the Japanese-English Dictionary

Tattoo (入墨) in Block style Japanese calligraphy by Eri Takase

Tattoo 入墨 irezumi Block Vertical VB2C

Tattoo (入墨) in Cursive style Japanese calligraphy by Eri Takase

Tattoo 入墨 irezumi Cursive Vertical VC2B

Tattoo (入墨) in Design style Japanese calligraphy by Eri Takase

Tattoo 入墨 irezumi Design Vertical VD2B

Tattoo (入墨) in Semi-Cursive style Japanese calligraphy by Eri Takase

Tattoo 入墨 irezumi Semi-Cursive Vertical VS2C

Tattoo 入墨 irezumi Block Horizontal HB2A

Tattoo 入墨 irezumi Cursive Horizontal HC2A

Tattoo 入墨 irezumi Semi-Cursive Horizontal HS2A

刺青 (shisei)

Tattoo has a few words in Japanese. After the Edo period, when done for personal expression it was called shisei. The samurai class, and later yakuza, adopted the word sumiire. This kanji can actually be read either way. Wikipedia has a good article at Irezumi.