- noun the penis. A term popularised first among American adults then among teenagers in the 1970s, it is probably inspired by dick and, perhaps, pork.
- noun a fool, an offensive buffoon. This is a predictable second (and now more widespread) sense of the word, on the same pattern as dick, prick, etc. It is not used affectionately (as plonker, for instance, is), but is only mildly offensive. Since the late 1970s this term has been in vogue in Britain and Australia as well as in its country of origin.