dinghizen, n. — Green’s Dictionary of Slang

dinghizen n.

[ety. unknown; Spears, Slang and Jargon of Drugs and Drink (1986), assumes that cit. 1959, copying cits. 1942 and 1949, is simply a misprint]

(US drugs) a hypodermic syringe, or an improvised syringe based on a medicine dropper attached to a hollow needle.

1938		D. Maurer ‘Lang. of the Und. Narcotic Addict’ Pt 2 in Lang. Und. (1981) 101/2: dinghizen. The inevitable medicine dropper which is in the lay-out of the needle-addict.
1942		Berrey & Van den Bark Amer. Thes. Sl.
1949		Monteleone Criminal Sl. (rev. edn).
1959		J.E. Schmidt Narcotics Lingo and Lore 39: Dinghiyen – An improvised hypodermic syringe.