tin·ker /tɪŋkɚ/
n.
1. A traveling mender of metal household utensils.
2. One who enjoys experimenting with and repairing machine parts.
3. A clumsy repairer or worker; a meddler.
v. tin·kered, tin·ker·ing, tin·kers
v.intr.
1. To work as a tinker.
2. To make unskilled or experimental efforts at repair; fiddle.
v.tr.
1. To mend as a tinker.
2. To manipulate unskillfully or experimentally.