tinker
ting ker
- n a person who enjoys fixing and experimenting with machines and their parts
 - n formerly a person (traditionally a Gypsy) who traveled from place to place mending pots and kettles and other metal utensils as a way to earn a living
 - n small mackerel found nearly worldwide
 - v do random, unplanned work or activities or spend time idly
 - v work as a tinker or tinkerer
 - v  try to fix or mend
                    
                        
                            
Can you tinker with the T.V. set--it's not working right 
- This group's goal wasn't merely to tinker with the system, but to declare that, without democracy, China had no future.
 - We must stop treating the poor as laboratory subjects that we tinker with in our pricey think tanks and universities.
 - Linus Torvalds wanted an OS that he could tinker with.