A naggin (sometimes spelled Naggan) is the name used in Ireland for a small bottle of spirits, often of vodka or whiskey. The term originates from Irish in which naigín, cnaigín, is the name for a small wooden pail capable of holding two glasses in volume. A naggin contains 200ml of liquid. The next size up from a naggin is 350ml in volume, often called a,"shoulder" "daddy-naggin" or "double naggin", despite falling short of truly containing twice the amount of fluid, the next size is 700ml and is known as a "neck". Naggins, particularly those of inexpensive vodka (such as Huzzar), are popular among youths and students. They are often implicated in binge drinking.
Although the smaller size is the same as the volume of a Chopine of wine, the bottles are usually significantly different in shape. The naggin bottle is typically short and flat, suitable for placing in a pocket, whereas the Chopine typically has a round cross-section. Whether made of glass or plastic, the naggin is rarely as thin as a metal hip flask.
- Tonás S. Ó Máille, Seanfhocla Chonnacht, Cois Life, 2010, p. 368