mucker

noun
  1. 1

    (Southern England) friend, acquaintance

    โ€œFancy a pint, me old mucker?โ€

  2. 2

    (British army) A comrade; a friendly, low-ranking soldier in the same situation.

    โ€œGo and talk to your mucker!โ€

  3. 3

    A person who removes muck (waste, debris, broken rock, etc.), especially from a mine, construction site, or stable.

  4. 4

    A low or vulgar labourer.

verb
  1. 1

    To scrape together (money, etc.) by mean labour or shifts.

Source: https://en.wiktionary.org/wiki/mucker