I have a friend who has several tattoos. She calls them sleeves.
Sleeve tattoo
A sleeve tattoo (or tattoo sleeve) is a large tattoo, or a collection of smaller tattoos, that has a unified theme, that covers most or all of a person's arm, usually from shoulder to wrist.
There is a difference between an arm covered in tattoos and a sleeve tattoo. A sleeve tattoo has a unified theme, whereas an arm covered in tattoos may have many tattoos of different styles that does not have an overall unity.
The term "sleeve" is a reference
a tattoo, which Giles claims he does not recognize.
Shaken, Giles does not meet Buffy at the hospital, and she battles the doctor-dressed vampires alone until Angel shows up. She goes to check on Giles who looks dishevelled and appears to have been drinking. He calls another friend in London and finds out that she is dead too. As he rolls up his sleeves, we see he has the same tattoo as Phillip. Meanwhile, Phillip comes back to life in the morgue, his eyes flashing,