Gowk

Gowk (pronounced ɡaʊk) is a noun with a number of meanings. It is sometimes used to mean a cuckoo or an awkward, clumsy or stupid person. Apparently the word goes back to ancient German and could mean a bastard, simpleton, or fool, which gives its commonest usage namely an awkward or foolish person. There is also a third totally distinct meaning; in Geordie dialect it means an apple core.

The middle, normally inedible part, of a fruit or vegetable, containing seeds etc.

a simpleton, someone without much sense or brains.