track marks 

the line of bruised needle holes in the arm of a junky produced as he shoots up at a slightly higher point on his arm each time.

she never wears short sleeves because she doesn't want anyone to see her track marks

track marks by minghi April 26, 2003

track marks 

can often mean the scars from shooting up. can also mean scars from cutting yourself.

-She always wears long sleeves to cover her track marks.
-She shoots up?
-Naw man, she cuts herself.
-Oh, less cool man.

track marks by ohaithar111 January 17, 2011

track marks 

Strips of brownish discoloration that can often be found in the undergarments being worn by someone with a 'less-than-tidy' anus.

Damn it all. I just bought these briefs last week and they are already trashed with track marks.

track marks by Ocram April 28, 2003