A junkie is someone that injects their drug of choice by a needle. Dirty or clean needles. They shoot up in their arms, under their fingernails, in their foot, in their neck, basically anywhere they can find a vein. A junkie is an addict who can't get high any other way than to shoot it.
A junkie is a person with scars on their arms,known as track marks.A junkie is Someone who will do whatever it takes lie, steal, cheat, do sexual favors, belittle themselves if thats possible for that next fix.A junkie might have bruises and knots from missing their vein.