tinker /tingˈkər/

1. An itinerant mender of kettles, pans, etc
2. A botcher or bungler
3. A rascal (informal)
4. A member of a group of Travelling People, a Gypsy (esp Scot and Irish; derogatory)
5. A slight, temporary or unskilful patching-up

To repair, esp ineffectually

1. To do a tinker's work
2. (often with with) to potter, fiddle, meddle, in trivial, ineffectual ways

• have one's collar felt
• have one's ear to the ground
• have oneself to thank for
• have one's end away
• have one's eye on
• have one's face lifted
• have one's feet on the ground
• have one's fill of
• have one's finger on the button
• have one's fingers all thumbs
• have one's hands full
• have one's head screwed on
• have one's head screwed on the right way
• have one's heart in it
• have one's heart in one's boots
• have one's heart in one's mouth
• have one's heart in the right place
• have one's heart set on
• have one's knife in
• have one's marbles
• have one's monkey up
• have one's name in the Gazette
• have one's own way
• have one's shirt out
• have one's way