• (America) IPA: /ˈnɑɡɪn/, /ˈnɑɡn̩/
• (British) IPA: /ˈnɒɡɪn/

noggin (plural noggins)

1. A small mug, cup or ladle; the contents of such a container.
   • 1889, Arthur Conan Doyle, The Parson of Jackman's Gulch:

     Here Nat Adams, the burly bar-keeper, dispensed bad whisky at the rate of two shillings a noggin, or a guinea a bottle…

2. (dated, outside, dialects) A small measure of spirits equivalent to a gill.
   • 1836 March – 1837 October, Charles Dickens, chapter 49, in The Posthumous Papers of the Pickwick Club, London: Chapman and Hall, […], published 1837, →OCLC ↗:

     I don’t know whether any of you, gentlemen, ever partook of a real, substantial, hospitable Scotch breakfast, and then went to a slight lunch of a bushel of oysters, a dozen or so of bottled ale, and a noggin or two of whisky to close up with.

3. (slang) The head.
4. (biochemistry) A signalling molecule involved in embryo development, producing large heads at high concentrations.
5. Alternative form of nogging

• German: Birne, Rübe
• Italian: zucca
• Portuguese: tola (slang)
• Russian: башка́
• Spanish: chaveta