Definition of head-the-ball in English:

head-the-ball

(also heid-the-baw)

noun

Irish English, Scottish
informal
  • (A name for) a foolish or silly person, an idiot.

Origin

1950s; earliest use found in Brendan Behan (1923–1964), writer. From head + the + ball.

Pronunciation

head-the-ball

/ˈhɛdðəbɔːl/