smackeroo gun n.[smack n.2 (1) + gun n.1 (7)](Aus. prison) a hypodermic syringe.Show quotations1990Tupper & Wortley Aus. Prison Sl. Gloss. 🌐 Smackeroo gun. Syringe.
![[Aus]](/static/img/flags/aus.png "Australia")