
1) Bungler 2) Slang for friend
Found on
https://www.crosswordclues.com/clue/mucker

• (v. t.) To scrape together, as money, by mean labor or shifts. • (n.) A term of reproach for a low or vulgar labor person.
Found on
http://thinkexist.com/dictionary/meaning/mucker/

a cheater who adds favorable cards to a multiple deck game.
Found on
http://www.blackjacktactics.com/blackjack/terms/

(from the article `tunnels and underground excavations`) ...drilling and blasting methods for harder rock. Here each cycle involves drilling, loading explosive, blasting, ventilating fumes, and excavation ...
Found on
http://www.britannica.com/eb/a-z/m/132

Similar to a grinder, but one who adds a more physical temperament to his game. This player tends to
Found on
http://www.encyclo.co.uk/local/22383
Muck'er noun A term of reproach for a low or vulgar labor person. [ Slang]
Found on
http://www.encyclo.co.uk/webster/M/110
Muck'er transitive verb To scrape together, as money, by mean labor or shifts. [ Obsolete]
Udall. Found on
http://www.encyclo.co.uk/webster/M/110

Mucker is British slang for friend.
Found on
http://www.probertencyclopaedia.com/browse/ZM.HTM

a vulgar, illbred person. · a person who often does or says the wrong thing; bungler. · (esp. in mining) a person who removes muck.
Found on
https://www.infoplease.com/dictionary/mucker
No exact match found.