tinkering Definition

1. A travelling mender of pots, pans and other household utensils; a gypsy.
2. colloq
A mischievous or impish person, especially a child.

1. To work in an unskilled way, meddle or fiddle with machinery, etc, especially to try to improve it.

Thesaurus: fiddle, dabble, potter, toy, play, monkey (slang), trifle, fuss.
Form: tinker about (often)
Form: tinker around
2. To work as a tinker.