mucker
noun
[ ˈmʌkə ]
• a person who removes dirt and waste, especially from mines or stables.
• a friend or companion.
• "we felt like old muckers"
• a rough or coarse person.
Origin:
Middle English: from muck + -er1; mucker (sense 2) probably from the phrase muck in . mucker (sense 3) is probably from German Mucker ‘sulky person’.