Definition of pit yacker in US English:

pit yacker

(also pit yakkor, pit yakker)

noun

English Regional, North
depreciative
  • A coal miner.

Origin

1960s; earliest use found in The Spectator. From pit + a second element of uncertain origin, perhaps a variant (with initial front glide) of hacker, or perhaps from yack, variant of yerk + -er.

Pronunciation

pit yacker

/ˈpɪt jakə/