Body art (3)
'body art' is the definition.
(art on someone's body)
This is all the clue.
(Other definitions for tattoo that I've seen before include "Military evening signal" , "Military event" , "Skin drawing" , "hide design?" , "Skin design; mil. display" .)
'body art' is the definition.
(tattoo)
This is the entire clue.
(Other definitions for tat that I've seen before include "Tasteless articles" , "Make lace using a small shuttle" , "trashy clothing" , "What you get for tit" , "Shoddy articles" .)
(Other definitions for ink that I've seen before include "Liquid in pens" , "Writing medium" , "Writing liquid" , "It is ejected by cuttlefish" , "See 9" .)