(informal, intransitive) To do random unplanned work or spend time idly / (informal, intransitive) To attempt to do something with a piece of equipment without understanding how it works.

(US, colloquial) A high muckamuck; a person (especially self-important) in a position of power, authority, or status.

plural of muckety muck

To remove muck or dirt from.

A piece of farm machinery, usually towed behind a tractor, used to spray liquified manure on fields

(informal, transitive) To ruin unintentionally. / (informal, Australia, intransitive) To clown around; to have fun, often at the expense of others.

To muck about.

(transitive) To clean the excrement and other rubbish from the area where an animal is kept, such as a horse stable or a dog kennel.

plural of mucky-muck

Alternative form of muckamuck